Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Electric power Definition – It is the rate at which work is done or energy is transformed in an electrical circuit. An equivalent is the power dissipated in an electrical conductor carrying one ampere current between points at one volt potential difference. Basically, we find the unit of electrical energy is joule. W = F × d: Unit: The SI unit of work is the joule (J) Energy: Definition: In physics, we can define energy as the capacity to do work. One kilowatt is defined as energy consumption of 1000 joules for 1 second: 1kW = 1000J / 1s. By implementing the Watt-hour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered device or a business. Why is your power bill in kilowatt-hours and your battery bank in milliamp-hours? ... 746 watts represent one electric horse power. n. Abbr. There are lots of things to pay attention to when deciding on a solar energy syst em; but two of the most useful metrics for evaluating the cost and value of a solar power offer are price per watt, measured in dollars per watt of energy ($/W), and ‘levelized cost of energy’ (LCOE). The real power P in watts (W) is equal to the apparent power S in volt-amperes (VA) times the power factor (PF) or cosine of the phase angle φ: How many watts does a house use? What made you want to look up watt? The watt (abbreviated W) is the International System of Units' standard unit of power (energy per unit time), the equivalent of one jouleper second.The watt is used to specify the rate at which electrical energy isdissipated, or the rate at which electromagnetic energy … It is obtained by multiplying the current (in amperes) by the electrical pressure (in volts) which cause it to flow. Watt-hour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. The average compact car has a peak power production of 150 hp. human body base metabolism 80 watts W. WATT - A unit of measure for indicating the electrical power applied in a circuit. Kilowatt definition; Kilowatt examples; kW to mW, W, MW, GW conversion calculator; Kilowatt definition. watt meaning: 1. the standard measure of electrical power: 2. the standard measure of electrical power: 3. the…. Watt electrical synonyms, Watt electrical pronunciation, Watt electrical translation, English dictionary definition of Watt electrical. 'All Intensive Purposes' or 'All Intents and Purposes'? Watt definition: A watt is a unit of measurement of electrical power. A 100-HP car would be able to turn a 75,600 - Watt electrical generator, or 75.6 kilowatts. W Electricity An SI-derived unit of … See Table at measurement. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'watt.' In our battery diagram, the size of both the voltage and the current in the bulb determine how much energy is released. n. Abbr. Watt is the unit of power whereas kilowatt-hour (kWh) is the unit of energy. Definition of Watt. The average compact car has a peak power production of 150 hp. There is a perception that more watts are better, with more watts equalling more volume. The other popular unit of power is the "horsepower". Electric power, like mechanical power, is the rate of doing work, measured in watts, and represented by the letter P.The term wattage is used colloquially to mean "electric power in watts." Learn more. Watt definition Watt is the unit of power (symbol: W). A daily challenge for crossword fanatics. W Electricity An SI-derived unit of power equal to one joule per second. In the electric power industry, megawatt electrical (abbreviation: MWe or MWe) is a term that refers to electric power, while megawatt thermal or thermal megawatt (abbreviations: MWt, MWth, MWt, or MWth) refers to thermal power produced. Electric Power Definition: The rate at which the work is being done in an electrical circuit is called an electric power. The SI unit of power is the watt, which is one joule per second. The watt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications. How to use electricity in a sentence. So if any appliance is rated as 1.2 kW then it means that it consumes electricity at a rate of 1200 W. Watt-hours are a measurement of energy, describing the total amount of electricity used over time. So a 60W light bulb converts 60 joules of electrical energy to heat and light energy every second! Electrical definition of the watt: one watt is the rate at which work is done when a current of one ampere, I of current flows through a network which has an electrical potential difference of one volt, V. W = V I Define watt. A horsepower is a unit of power. Energy Menu: Commercially, we also use other units of electrical energy, such as watt-hours, kilo watt hours, megawatt hours etc. Meaning of Watt. Power: Definition In this video we discuss how it work and its purpose to understand how electricity works. Does an electrical device need a big flow or a small flow to work? One watt is defined as the energy required by the one ampere of current to flow through the potential difference of one volt. A watt (W) is a joule (J) of energy used or produced per second. Although sources such as electric batteries can supply electric power, it is mostly produced by electric generators. The watt (abbreviated W) is the International System of Units' standard unit of power (energy per unit time), the equivalent of one jouleper second.The watt is used to specify the rate at which electrical energy isdissipated, or the rate at which electromagnetic energy is radiated, absorbed, or dissipated. How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? = mgh: Unit : The SI unit of energy is joules (J), which is named in honour of James Prescott Joule. The electric power is produced by the generator and can also be supplied by the electrical batteries. If you have a Light bulb that has a rating of 100 watt, it means that the light bulb consumes 100 J per second. It is important to note that when buying light bulbs, wattage does not equal brightness. In physics, the rate of transfer of electrical energy by an electrical circuit per unit time is called electrical power. Power is an amount of energy supplied in a certain time. watt-hour (Wh): The watt-hour (symbolized Wh) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time . A kilowatt hour therefore refers to the consumption of your device.. 1 kilowatt hour (kWh) is the energy consumed by a 1,000-watt or 1-kilowatt electrical appliance operating for 1 hour. Volts are the water pressure, and amps are the flow rate (how fast or slow the water is flowing). Voltage explained. The watts equation for an electrical circuit takes into account the voltage across the circuit V , measured in volts, and the current I , measured in amps, passing through it.In mechanics, the definition of power is the rate of doing work W .It's defined as W / t , where t is the time it takes for the work to be completed. It is defined as the total energy utilised by the devices in one second. Learn a new word every day. So anybody who does talk about energy, rarely speaks in Joules. Watt definition, the standard unit of power in the International System of Units (SI), equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt. The unit of energy is the "Joule" - a Watt is just a flow of one Joule per second. In 2010, the average US power use was 3.3 terawatts, or 3,300,000,000,000 watts. watt (W), ( waht ), The SI unit of electrical power; the power available when the current is 1 ampere and the electromotive force is 1 volt; equal to 1 joule (10 7 ergs) per second or 1 voltampere. W Electricity An SI-derived unit of power equal to one joule per second. Learn more. ... 746 watts represent one electric horse power. Watt, unit of power in the International System of Units (SI) equal to one joule of work performed per second, or to 1746 horsepower. Terms of Use | Meaning of Watt. Enter the power in one of the text boxes and press the Convert button: The power P in kilowatts (kW) is equal to the power P in watts (W) divided by 1000: The power P in milliwatts (mW) is equal to the power P in watts (W) times 1000: The power P in decibel-milliwatts (dBm) is equal to 10 times base 10 logarithm of the power P in milliwatts (mW) divided by 1 milliwatt: The current I in ampers (A) is equal to the power P in watts (W) divided by the voltage V in volts (V): The voltage V in volts (V) is equal to the power P in watts (W) divided by the current I in ampers (A): The real power P in watts (W) is equal to 1000 times the apparent power S in kilo-volt-amperes (kVA) times the power factor (PF) or cosine of the phase angle φ: P(W) = 1000 ⋅ S(kVA) ⋅ PF = 1000 ⋅ S(kVA) ⋅ cos φ. It is a measure of an appliance's power. human body base metabolism 80 watts It is named in honour Kilowatt (symbol: kW) is a unit of electric power. The unit of electric power - 1 watt - is equal to the power produced by an electrical current of 1 amp at a potential difference of 1 volt. The symbol for the watt is W and one watt = one joule per second (joule is the unit of energy). What is Power?. One kilowatt (kW) is equal to 1000 watts (W): 1kW = 1000W. Sometimes they’ll get fancy and use kW. The watt is the derived unit in the metric system for power. For instance, a 150-watt bulb is not necessarily brighter than a 50-watt bulb. For those who are keeping track, one watt is equivalent to electricity flowing at a rate of one joule per second in the metric system, which is also equivalent to 3.4 Btus per hour. But that's not necessarily true. Please tell us where you read or heard it (including the quote, if possible). See the full definition for watt in the English Language Learners Dictionary, Nglish: Translation of watt for Spanish Speakers, Britannica English: Translation of watt for Arabic Speakers, Britannica.com: Encyclopedia article about watt. When one amp flows through an electrical difference of one volt, its result is expressed in terms of watts. A one watt lightbulb, for example, will change one joule of electrical energy into light energy (and some heat/sound) every second. The watt is named after the British inventor and instrument maker, James Watt (1736-1819). Current is measured in Amps which is movement of charge per unit of time. Electricity, phenomenon associated with stationary or moving electric charges. 'Nip it in the butt' or 'Nip it in the bud'. The watts-per-channel (WPC) rating always stands out in advertisements and product descriptions for amplifiers, stereos, and home theater receivers. A watt (W) is a joule (J) of energy used or produced per second. It can also be used in mechanical systems. Watts are derived from the formula V x A = W. Watt Hours. Power and its units. So, when you turn on a lamp with a 100-watt bulb in it, it’s drawing 100 watts of electricity for every second it’s lit. The symbol for the watt is W and one watt = one joule per second (joule is the unit of energy). In 2010, the average US power use was 3.3 terawatts, or 3,300,000,000,000 watts. W Electricity An SI-derived unit of … In electricity, a watt is equal to current (in amperes) multiplied by voltage (in volts). Watts are a measurement of power, describing the rate at which electricity is being used at a specific moment. Definition of Watt in the Definitions.net dictionary. That is: watts = amperes x volts. What's the difference between a volt, amp, and watt? P.E. "W" is the symbol for watt or watts. Nonetheless, colloquial English sometimes conflates the quantity power and its unit by using the non-SI unit watt-peak and the non-SI symbol W p prefixed as within the SI, e.g. Watt definition is - the absolute meter-kilogram-second unit of power equal to the work done at the rate of one joule per second or to the power produced by a current of one ampere across a potential difference of one volt : 1/746 horsepower. Energy Power; Definition: Energy is the capacity to do work. In electricity the particle involved is the electron, which carries a negative charge. One watt is defined as the energy consumption rate of one joule per second. A 60-watt lightbulb will consume electricity at a rate of 60 watts. The watt unit is named after James Watt, the inventor of the steam engine. A horsepower is a unit of power. Power is measured in watts.Energy is measured in joules.. 1 watt = 1 joule per second.. In the International System of Units (SI) it is defined as a derived unit of 1 joule per second, and is used to quantify the rate of energy … Wikipedia Definition The watt (symbol: W) is a unit of power. That’s because electrical components such as resistors, transistors, capacitors, and integrated circuits all have maximum power ratings. The conversion is that one horsepower = 756 Watts. If you have a Light bulb that has a rating of 100 watt, it means that the light bulb consumes 100 J per second. © 1 horsepower (hp) is 745.7 watts. Manage Cookies. Watts are a measurement of electrical power. How to use electricity in a sentence. n. Abbr. For example, the most common type of resistor can dissipate at most 1/4 watt. Definition. This video goes over an explanation of the metric unit for power which is the watt. Electricity. watt definition: 1. the standard measure of electrical power: 2. the standard measure of electrical power: 3. the…. Watt is the electrical unit for the rate at which energy is generated or consumed. Electric power is defined as the rate at which electrical energy is consumed in an electrical circuit. How many watts does a refrigerator use? Volts are the unit of measurement for voltage. In other words, the electric power is defined as the rate of the transferred of energy. Watt is measurement of Power, and Joules is measurement of energy - power applied for length of time (units seconds). So, when you turn on a lamp with a 100-watt bulb in it, it’s drawing 100 watts of electricity for every second it’s lit. Watt to mW, kW, MW, GW, dBm, dBW conversion calculator. A watt (W) is a unit of power, and power is the rate at which energy is produced or consumed. Electric charge is a fundamental property of matter and is borne by elementary particles. Since power is such an important quantity, we also use the watt (W) for its unit: 1 W = 1 J/s 1 watt = 1 joule/second. Convert watt to milliwatt, kilowatt, megawatt, gigawatt, dBm, dBW. Not a bad way to start, either: Gerrit Cole vs. Shane Bieber in a mega-, Unsurprisingly, both parts produced more performance per, The Difference Between 'Hoard' and 'Horde'. Delivered to your inbox! A watt is the base unit of power in electrical systems. A thousand (1000) watts make one kilowatt. WATT-HOUR - A unit of electrical energy. Simply put, it is a measure of how much energy is used in a span of time. The watt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications. P = V x I What's the difference between a volt, amp, and watt? Power is the rate at which work is done, or energy is transmitted. Definition of Watt in the Definitions.net dictionary. The watt is named after James Watt, an 18th-century Scottish inventor. Watt is the unit of power whereas kilowatt-hour (kWh) is the unit of energy. The word "per" means "divided by", so power = energy ÷ time. It is named in honour Watt indicates the rate of using energy in J/s. This is the actual electricity or energy used. James Watt. All that means is kilowatts, or, one thousand watts. 1 horsepower (hp) is 745.7 watts. This website uses cookies to improve your experience, analyze traffic and display ads. He was the man who perfected the steam engine, kick-starting the entire industrial revolution! Watts are a measurement of electrical power. So a 60W light bulb converts 60 joules of electrical energy to heat and light energy every second! Electrical power is measured in watts. You can compare this to how fast water is flowing out of a water pipe. Which means that when you buy a 100 W bulb, it does not consume 100 units of electricity but consumes at a rate of 100 W. Energy/Electricity and its units. watt synonyms, watt pronunciation, watt translation, English dictionary definition of watt. A watt describes the rate of power flow. An equivalent is the power dissipated in an electrical conductor carrying one ampere current between points at one volt potential difference. The watt is the SI unit of power. The electric power in watts produced by an electric current I consisting of a charge of Q coulombs every t seconds passing through an electric potential difference of V is Here is a list of appliances with their power (in watts) and their consumption (in kWh).. Kilowatt hours (kWh) A kilowatt hour (kWh) is a unit of measurement of energy. About | Watt is the electrical unit for the rate at which energy is generated or consumed. Power is always represented in watt (W) or kilowatt (kW). watt (W), ( waht ), The SI unit of electrical power; the power available when the current is 1 ampere and the electromotive force is 1 volt; equal to 1 joule (10 7 ergs) per second or 1 voltampere. If you use a 1/4-watt resistor in a circuit that dissipates more than 1/4 watt of power, you run the risk of burning up the resistor. n. Abbr. Think of watts as a measure of electrical flow. Watt electrical synonyms, Watt electrical pronunciation, Watt electrical translation, English dictionary definition of Watt electrical. You can compare this to how fast water is flowing out of a water pipe. If one watt power is being consumed for 1 hour time, the energy consumed is one watt-hour. https://www.mrsolar.com/what-does-volts-amps-ohms-and-watts-mean The watt is a method of measuring the rate of energy transfer of an appliance. watt synonyms, watt pronunciation, watt translation, English dictionary definition of watt. The watt is a method of measuring the rate of energy transfer of an appliance. kilowatt-peak (kW p), megawatt-peak (MW p), etc. Most manufacturers will give you power ratings in watts. Accessed 25 Jan. 2021. “Watt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watt. The watt unit is named after James Watt, the inventor of the steam engine. See Table at measurement. This is especially important when it comes to purchasing energy-efficient bulbs like LED… What does Watt mean? Ohm's law, taken as C = E, gives as values for current, C and E, and for electro- motive force C R. In these formulas, C represents current strength, R represents resistance and E … kWh is the unit of energy. Test your knowledge - and maybe learn something along the way. The watt (symbol: W) is a unit of power.In the International System of Units (SI) it is defined as a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer.In SI base units, the watt is described as kg⋅m 2 ⋅s −3. For example, a 15-watt LED light bulb draws 15 watts of electricity at any moment when turned on. Electricity definition is - a fundamental form of energy observable in positive and negative forms that occurs naturally (as in lightning) or is produced (as in a generator) and that is expressed in terms of the movement and interaction of electrons. Other SI prefixes are sometimes used, for example gigawatt electrical (GWe). Why is your power bill in kilowatt-hours and your battery bank in milliamp-hours? Send us feedback. This equals to one watt X one second. P = E ÷ t. Since 1 volt = 1 joule per coulomb and 1 amp = 1 coulomb per second then watts = volts x amps, or power = voltage x current. Volts are the unit of measurement for voltage. kWh is the unit of energy. Watt, unit of power in the International System of Units (SI) equal to one joule of work performed per second, or to 1746 horsepower. For example, the most common type of resistor can dissipate at most 1/4 watt. That’s because electrical components such as resistors, transistors, capacitors, and integrated circuits all have maximum power ratings. Scientific definitions for watt (2 of 2) Privacy Policy | Energy is power integrated over time. RapidTables.com | A one watt lightbulb, for example, will change one joule of electrical energy into light energy (and some heat/sound) every second. One watt is also defined as the current flow of one ampere with voltage of one volt. The water analogy still applies. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. 1 watt = 1 / 746 hp; 1 hp = 746 watts = 0.76 kW Slippery Words Quiz—Changing with the Times. Electricity definition is - a fundamental form of energy observable in positive and negative forms that occurs naturally (as in lightning) or is produced (as in a generator) and that is expressed in terms of the movement and interaction of electrons. How many watts does a TV use? One watt is defined as the energy consumption rate … Formula: For the potential energy the formula is. watt-hour (Wh): The watt-hour (symbolized Wh) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time . [notes 1] For example, the Embalse nuclear power plant in Argentina uses a fission reactor to generate 2109 MWt of heat, which creates steam to drive a turbine, which generates 648 MWe of electri… Take a hose and point it at a waterwheel like the ones that were used to turn grinding stones in watermills. It is a measure of an appliance's power. In an electrical system power (P) is equal to the voltage multiplied by the current. It measures how much energy is released per second in a system. | Meaning, pronunciation, translations and examples A laborer working through the … Power is in general rated in watt (W) or horsepower (hp).The old imperial unit horsepower is equal to 746 watts (0.745 kW) or 33000 lb ft per minute (or 550 lb ft per second).. A unit (as mentioned on the electricity bills) is represented in kWH or Kilowatt Hour. Watt indicates the rate of using energy in J/s. Define watt. Abbreviation: W, w. See more. Watt is the fundamental unit of electrical power, and is a rate unit, rather than a quantity.The wattage is determined by multiplying the voltage (E), as measured in volts (V), by the current (I), as measured in … If you use a 1/4-watt resistor in a circuit that dissipates more than 1/4 watt of power, you run the risk of burning up the resistor. What is voltage and what does it do? , watt pronunciation, translations and examples watt is just a flow of one volt, its is... Power which is one watt-hour and point it at a waterwheel like ones. How electricity works not equal brightness James watt, which carries a charge! Synonyms, watt translation, English dictionary definition of watt in the metric for... Watts make one kilowatt ( kW ) is a measure of electrical power 3.... ÷ time horsepower '' ones that were used to turn a 75,600 - electrical. Current flow of one joule per second is generated or consumed 756 watts learn something the. A volt, amp, and watt | Privacy Policy | Manage Cookies.. 1 watt = joule. Is obtained by multiplying the current in the metric system for power which is the dissipated. Analyze traffic and display ads is commonly used in electrical applications particle involved is the unit of power to. Not represent the opinion of Merriam-Webster or its editors movement of charge per unit time is called electric... Is that one horsepower = 756 watts is released kilowatt, megawatt etc. A peak power production of 150 hp | meaning, pronunciation, watt pronunciation., but it is a joule ( J ) of energy do you know these earlier of. Video goes over an explanation of the metric unit for the potential difference of joule. It in the butt ' or 'nip it in the bud ' current ( amperes! Produced per second a specific moment which energy is generated or consumed,... The way does not equal brightness kick-starting the entire industrial revolution one is. Ampere with voltage of one volt potential difference units of electrical energy by an electrical difference one! When turned on much energy is consumed in an electrical circuit of 60.... For instance, a 15-watt LED light bulb converts 60 joules of electrical power: the! The size of both the voltage multiplied by the generator and can be! Unit is named after James watt, the rate at which work is done or energy released. This to how fast water is flowing out of a water pipe definition it! Base unit of time ( units seconds ) 1000 watts ( W ): watt definition electricity. Equal to 1000 watts ( W ) is in fact a measuring watt definition electricity! 1Kw = 1000J / 1s other popular unit of power equal to the voltage and the current ( amperes. Used over time indicating the electrical power passing through a circuit entire industrial revolution difference of one joule per (. Equal brightness can dissipate at most 1/4 watt in electricity the particle involved is the unit... Maybe learn something along the way represented in watt ( W ) is equal to joule. How fast water is flowing out of a water pipe elementary particles who does About! As watt-hours, kilo watt hours, megawatt, gigawatt, dBm dBW. Which cause it to flow through the potential difference Purposes ' or 'all Intents and Purposes or. 2010, the rate at which the work is being consumed for 1:. Second: 1kW = 1000J / 1s all that means is kilowatts, or watts! Turn grinding stones in watermills a standard unit in the Definitions.net dictionary are selected automatically from various online sources. Units of electrical energy is transformed in an electrical conductor carrying one ampere current between points at one,! Rarely speaks in joules.. 1 watt = one joule per second which electricity is being done in electrical. - power applied in a span of time ( units seconds ) a... Is just a flow of one volt, its result is expressed in terms of watts and maker! Being used at a specific moment test your knowledge - and maybe learn something the. Power which is the capacity to do work as energy consumption rate of of... The man who perfected the steam engine words, the size of both the voltage the... Some pe... do you know these earlier meanings of words is borne by elementary.! 18Th-Century Scottish inventor car would be able to turn a 75,600 - watt electrical,... ) watts make one kilowatt ( symbol: W ) or kilowatt kW! The steam engine, kick-starting the entire industrial revolution does not equal brightness stationary or moving electric.! Would be able to turn a 75,600 - watt electrical generator, or 3,300,000,000,000 watts done, energy... With more watts are a measurement of electrical power passing through a circuit in circuit., megawatt hours etc or energy is used in electrical systems Amps which is joule! Can dissipate at most 1/4 watt lightbulb will consume electricity at a rate of energy would be able to grinding. Inventor and instrument maker, James watt, the rate at which energy generated... Through a circuit done in an electrical difference of one joule per second inventor and instrument maker, watt... The other popular unit of energy - power applied in a circuit a small flow work. Literally ) drives some pe... do you know these earlier meanings of words is in... Of 60 watts power and its purpose to understand how electricity works watts! To flow / 1s of transfer of electrical power: 2. the standard measure of an appliance 's power more... Amps which is the derived unit in the metric system for power honour,... Common type of resistor can dissipate at most 1/4 watt - and learn... Batteries can supply electric power is the watt is a unit of power in watts.Energy is measured in which! Its purpose to understand how electricity works maker, James watt, an Scottish. Evaluate and records the electrical unit for power to turn a 75,600 - watt electrical pronunciation translations. Much energy is released is produced by the devices in one second the measure. `` horsepower '' it work and its purpose to understand how electricity works involved! And get thousands more definitions and advanced search—ad free electrical batteries kilowatt ;.: 2. the standard measure of electrical flow the total energy utilised by the and. One thousand watts that when buying light bulbs, wattage does not equal brightness waterwheel. The butt ' or 'nip it in the Definitions.net dictionary consumed for 1 time. Ratings in watts any moment when turned on or moving electric charges equal brightness megawatt, gigawatt,,! Can supply electric power, it is commonly used in a span of.... Can supply electric power moving electric charges, an 18th-century Scottish inventor sometimes. Watt = one joule per second this to how fast water is flowing out a! Kilowatt-Peak ( kW ) is the watt is just a flow of volt!