What is difference between running watts and starting watts?
When you first turn on a motor it is starting from a static position and more current is required to get the motor up to speed (Starting current) than to keep it running (running current). Since watts equals amps times voltage you can see the difference in wattage is related to current. If you look at watts as work being done it is obvious that it requires more work to get the motor running than to keep it running.
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A watt is a measure of power. It is volts multiplied by amperes, or just volt-amps to lots of electrical types. The amount of power is very easy to measure, but it can be used quickly or slowly, depending on the device "sucking up the power" from the source. A watt can last for a long, long time (as… in a watch battery), or can be gone in a moment (as it would be when the microwave oven is turned on). (MORE)
Watt is a derived unit in SI for the power; the symbol is W. The basic units: 1 W = 1 kg.m2/s3. The most used multiples arekilowatt (1000 W) and megawatt (1 million watts).
A watt is the SI unit of power. It's equivalent to one joule per second.
Joules versus watts The joule and the watt are closely related units. The joule is a unit of work and energy. It is equal to a newton-meter (N-m). Note that the unit of torque is also the newton-meter, but scientists don't use the word joule when they are talking about torque. The watt is a… unit of power and is defined as a joule per second , so you can see that power is work per unit time. One joule is equal to one watt-second. (MORE)
Although we can't necessarily see electricity, we can measure it by its effects. An ampere, or amp, represents the amount of current in a circuit. Voltage is defined scientifically as the circuit's "potential difference," and can be seen as the amount of "pressure" that drives electricity in a circu…it. Watts are a measure of the use of electrical power, and one watt is equal to one volt multiplied by one amp. Additional Answer The watt is used to measure an AC circuit's true power , whereas a volt ampere is used to measure the circuit's apparent power . Apparent power is the product of current and voltage, whereas true power is the product of current, voltage, and power factor. The true power of an AC circuit is measured using a wattmeter, whereas the apparent power is the product of current and voltage. (MORE)
For starters, a Kilowatt (kW) is just one thousand watts, just like a megawatt (mW) is one million watts. A "watt" (W) is a measurement of POWER. To be precise it's using one joule per second. However, since no one has uttered the word "joule" since that physics class they took fifteen years ago, we… use watts instead of Joules per second, because they're printed on light bulbs and people have an idea of what they mean. To put it in perspective, a car engine cruising uses about 25,000 watts, which is about 30 horsepower.. But that's a carâ¦ Mechanical energy. We want to talk about electricity since we're concerned with solar power. With electricity, POWER is voltage time amperage. Or 1watt = 1volt * 1ampere.. A good way to think about electricity is that it's a lot like water. Voltage is the pushing, or the pressure, and amperage is the flow. A dammed up lake, although it has a lot of pressure (voltage), doesn't flow anywhere (zero amperage) so there's no power (lots of volts * zero amps = zero watts). On the other hand take a super soaker water gun. Super fast stream (lots of amps) but a tiny little compressed reservoir (not a lot of volts). I wouldn't go so far as to call that "powerful." Finally, look at a rushing river. Lots of volts, lots of amps, huge power. . Oh yah, Watts. Ok, so a Watt is energy burned per second. If you flick on a 100 Watt light bulb it's eating up 100 Joules of energy every second (interestingly, a standard candle is exactly 1 Watt). So now what's a watt-hour (wH)? Well, don't get confused when you see a confusing or seemingly incorrect usage of watt or watt-hour in mass media. The two terms are often interchanged and misused.. "Watts per hour" doesn't make sense because it's already a measurement of "joules per second." Does "Joules per second per hour" make sense? No. A Watt-hour is what your power company uses to charge you, and it's a way of removing the "per second" from Watts. So now instead of talking about Joules per unit of time, you're just talking about Joules periodâ¦. but we call them Watt-hours because no one knows what the hell a "joule" is.. Think of Watts as the speed you're running and Watt-hours as how far you've actually ran. A kilowatt-hour is the amount of energy equivalent to a power of 1 kilowatt running for 1 hour. If you leave a 100 Watt light bulb on for 1 hour, you've done gone and used up 100 watt-hours, and PG&E is going to bill you accordingly. (MORE)
Watts means the electric power and kilowatthours means electric energy.. Compare:. http://en.wikipedia.org/wiki/Electric_power. http://en.wikipedia.org/wiki/Power. http://en.wikipedia.org/wiki/Electric_energy. http://en.wikipedia.org/wiki/Energy. Cheers ebs
James Watt (1736-1819) was a Scott who improved the steam engine. He is often confused with as the inventor of the steam engine. The unit "watt" is named after him. it is equal to on joule per second.
VA or volt-amps is also volts times amps, the concept however has been extended to AC power. For DC current: VA = Watts (DC current). . In AC if the volts and amps are in phase (for example at a resistive load) then the equation is also: VA=Watts (resistive load) where V is the RMS voltage a…nd A is the RMS amperage. (MORE)
Welll, it's actually a lot like the difference between amile-per-hour and cars, or between an inch and people. -- "Watt" is a unit of measure that describes the rate at which energy is used, or produced, or moved from one place to another. -- "Sunlight" is a small portion of the stupendous amou…nt of energythat the sun produces and pours out in every direction at a humongous rate. (MORE)
RMS means root mean square and watts means power. What a difference!. Scroll down to related links and look for a neat pressure converter at "Root Mean Square" und knowlege about "Watt". Watts root mean square is the effective value of alternating current electrical power compared to direct cu…rrent power.. Scroll down to related links and look for "Why there is no such thing as 'RMS watts' or 'watts RMS' and never has been".. RMS watts is meaningless, but we use that term as "an extreme shorthand" for power in watts calculated from measuring the RMS voltage. (MORE)
A watt is a measure of power , and a volt is a measure of electrical potential difference . A watt is a volt times an amp. Said another way, power (P, given in watts) is equal to current (I, given in amps) times voltage (E, given in volts). The formula is given here: P = I x E See relate…d questions below.. (MORE)
The amount of light produced and the amount of power consumed. A watt is a unit of power and electrical power is determined using the formula:. P = I 2 *R , Where P is power, I is amps and R is resistance. But using Ohm's law ( V = I * R) the following can be obtained:. P = V 2 /R , Where V is vol…tage.. In US house holds the standard voltage is ~120V, changing the resistance of the filament of the light bulb will change the amount of power consumed and therefore the amount of light produced. The higher the wattage the lower the resistance of the filament. Filaments are used in standard incandescent light bulbs and not in fluorescent tubes or LED fixtures. (MORE)
60 watts. This means that the 40 watt bulb uses less electricity but it also produces less light.
Answer . The volt is a measure of electric potential difference or electromotive force.. The watt is a unit of power which measures a rate of energy use.. Scroll down to related links and look at "Electrical voltage V , amperage I , resistivity R , impedance Z , wattage P ".
The watt is a unit of power . It is a Newton meter persecond, or can be given as a joule per second. We often encounterit in electrical calculations, and it is the unit of power forapplications there. The formula for power is given here: P = I x E In this expression, the power (P) in watts is equ…al to the current(I) in amps (or amperes, if you prefer) times the voltage (E) involts. The simplest example of a watt would be the amount of power thatyou would have if you had one volt at one amp of current. Or, toput it another way, 1 volt X 1 Amp=1 Watt. To go further, 12 voltsat 1 amp equals 12 watts. This is for direct current measurement. For AC voltage, it varies in that you would multiply the volts by.707 (AC RMS voltage), then multiply by the amps to get your wattstotal. (MORE)
Watts is the product of amps and volts. It's amps times volts.. The watt (W) is a measure of power (P). It's the SI unit of power, actually, and it's a joule per second. The volt is a measure of electrical potential difference, and is the SI (derived) unit of electromotive force, or EMF (E). Voltag…e, which is measured in volts (V), is the force that drives electron current flow (I), which is measured in amps (A).. In relationship to the volt, the watt is current flow times voltage, or, said another way, a watt is amps times volts. As regards watts and volts, they are "linked" by current. Let's look at the expressions:. Power = Current x Electromotive force => P = I x E. Power (in watts) = Current (in amps) x Electromotive force (in volts). Voltage is a measure of electric potential, in joules per coulomb. Watts is a measure of energy transfer rate, in joules per second. To complete the answer, amperes is a measure of charge transfer rate, in coulombs per second, which is why voltage (joules per coulomb) time amperes (coulombs per second) is watts (joules per second). (MORE)
Both are used to measure power . The horsepower is simply the Imperial unit for power, whereas the watt is the SI unit for power, where one horsepower is equivalent to 746 watts. In North America, it is traditional to measure the output power of an electric motor in horsepower, while the wa…tt is used to measure its input power . Elsewhere in the world, the watt is used to measure both input power and output power. (The difference between output power and the input power is due to losses, such as heat transfer, friction, windage [air resistance], etc.) Outside North America, the output power of a car engine is now measured in kilowatts rather than in horsepower. (MORE)
We know that Power = Voltage(V) X Current(I) and power is measured in terms of watts as well as volt-amperes. However, for AC circuits, based on the observation that the voltage considered is often an average measure, VA often tends to be a far higher number as compared to the actual "wattage". B…ased on some information I found at the Argonne national laboratory site: the explanation found was: 1 joule = the energy generated when 1 ampere of electrical current, passes through an electrical potential drop of 1 volt. Energy = Volts x Current. 1 watt = 1 joule/second. So joules is a quantity of energy, and watts is the RATE of generation of energy. Watt = Energy / second. (MORE)
A volt is one individual unit of measurement, used in the formula to calculate the watt, which is overall power The equation is simple: W = V*A W = Power In watts A = Amperes (Amps) V = Voltage (Volts)
the difference is that the former is fitted with some type of registration mechanism whereby all the instantaneous reading of power are summed over a definite period of time whereas the latter indicates the value at particular instant when it is read.
The watt is the SI (metric) unit of measurement for power, whereas the horsepower is the Imperial unit for power. Either unit can be used to measure power, although the horsepower is considered archaic in most countries outside North America. For example, most European car manufacturers now ra…te their engines in kilowatts rather than in horsepower. Further Note: The horsepower is still common in the UK, for internal-combustion engines and electric motors. It equals 33000ft-lbs/hour, or 746W. When the 4W per HP error is insignificant, approximating 1 HP to 750W simplifies converting the units. I have seen a peculiar unit quoted in car reviews in the British press, the "kp" (kilopoule) - literally "1000 hens". It's not a standard unit of power in any real system, and I have not seen any conversion for it, but it may emanate from the French car makers. (MORE)
Watts is the product of amps times volts. W = A X V. Electricially put W=IxE where w= watts, I= amps, E= volts. watts = unit of power . amps or ampere = unit of electric current . volts = unit of voltage supplied See also: http://www.wisegeek.com/what-is-the-difference-between-an-amp-volt-and-wa…tt.htm (MORE)
A "kilo" means 1000. So a kilowatt is a thousand watts. The same applies to voltage. A kilovolt is 1000 volts. Wattage is the measurement of "electrical power". Voltage is the measurement of "electrical potential" See "Ohms Laws" for more explanation of electrical terms.'
Nothing to do with watts, bases could be any of the following except maybe mogul: Intermediate Base, 17mm,21/32 inches. Candelabra Base, 21mm, 13/16 inches. Medium Base, 29mm, 1 1/16 inches. Mogul Base, 40mm, 1 9/16 inches.
kva is an apperent power which is ac,depends on phaseangle eg-e=25cos wt.while watt is a true power which is dc eg-p=vi
\nDepends on the appliance, and in most cases, it does not matter. For a purely resistive appliance, such as a kettle, or a toaster, the two should be the same. Certain devices such as computers and other electronics will consume reactive power, which is measured by the VA rating. The Watt rating me…asures only real power. In residential settings, you will not be billed for reactive power, and so you do not need to worry about the VA rating. However, the VA rating is the "true" power required by the device, so if you are planning to hook it up to a generator or UPS, you will need to be able to provide at least that much power. (MORE)
Watts are the units for Power while Amps or Amperes are the units for Current.
" volt " = unit of 'potential difference' or 'electromotive force', the 'pressure' between two points that makes electrons want to flow from one point to the other. Useful only in connection with electrical stuff. " watt " = unit of power, the rate at which energy flows. Useful any place wh…ere energy, in any form, is being transferred, converted, or consumed. (MORE)
VA is meant as Apparent Power. Formula = V X A [ Voltage X Current].. Watt is a unit of True power Formula = V X A X CosÎ¸ [ Voltage X Current X Power factor]..
Watt rating is the amount of real power that is absorbed (or supplied). VA is normally the units given to the total complex power which is made up of the real power and reactive power. The formula for complex power is as follows. S = P + jQ P is the real power which is used by the resistive e…lements of the component while the reactive power (imaginary power) is that power which the capacitive and inductive parts of the circuit cause to flow. Watt ratings are always lower (or equal) to the VA rating due to the fact that it neglects imaginary power that is flowing, because of this both ratings should be taken into account. (MORE)
James Watt was a Scottish inventor who is famous for hisimprovements on the design of early steam engines. He became amajor contributor to the Industrial Revolution.
' Hz ' is the symbol for ' hertz ', the SI unit for frequency -equivalent to a 'cycle per second'. The frequency of your supply is 50 Hz in Europe, or 60 Hz in North America. The ' watt ' is the SI unit for power , which is the rate at which your electrical appliances use energy.
S. No. . Dynamometer Type Wattmeters . Induction Type Wattmeters . 1. . The instrument can be used on both dc and ac systems. . The instrument cannot be used on dc system. . 2. . The instrument can have high degree of accuracy. If carefully designed. . The instrument is less acc…urate. It is accurate only at stated frequency and temperature . 3. . Power consumption is comparatively low. . Power consumption is comparatively higher . 4. . Weight of moving system is comparatively low. . Weight of moving system is comparatively higher . 5. . The instrument has uniform scale. . The instrument has uniform and long scale . 6. . The instrument has comparatively weaker working torque. . The instrument has comparatively stronger working torque. . (MORE)
1 megawatt = 1,000 kilowatts The difference between 1 megawatt and 1 kilowatt is 999 kilowatts.
A 220V service rated for 200 Amperes can supply 44 kW at Unity -- less at lower than Unity power factors.
40 watts of consumed power. The light output may be greater with one compared to the other, but wattage alone does not give us that information. Electric heaters, for example, consume 1500 watts of power and produce almost no visible light. Check the Lumen's. That is where the difference is. Curr…ent draw and light output. A 60 watt bulb uses 60 watts of electricity (i.e. it converts 60 joules of energy per second), a 100 watt bulb converts 100 joules per second. Electrical power is measured in watts. Since a 60 watt bulb pulls less energy to it than a 100 watt bulb the 60 watt bulb will not be as bright. Resistance. Just in the amount of power used and the brightness of the bulb. The 60 watt bulb might be a bit smaller. (MORE)
Volt-Amp is apparent power, in direct current Volt x Amps = power with unit of Watt. For Alternate Current Volt-Amp is generally different from real power because the power supply in wave form and might be out of phase and portion of energy is not usable. Volt-Amp is always higher or equal to real p…ower in AC. (MORE)
In a DC circuit, the power in watts is the volts times the amps. Inan AC circuit, the volts times the amps is called the VA, and thepower in watts is the VA times the power factor, which is 1 forsome appliances but less than 1 for others. volt-amps, or current, is only one variable of any circuit;… wattagewould be the product of current times voltage, a.k.a. power Answer In purely-resistive AC circuits, the load current and supplyvoltage are said to be in phase with each other, and the product ofthese two quantities is called the true power of the load,expressed in watts . If the AC circuit is not purely resistive, then it isdescribed as being reactive , and the load current eitherlags or leads the supply voltage. In this case, the product ofthese two quantities results, not in the true power of theload, but in the apparent power of the load. Todifferentiate between apparent power and true power, apparent poweris measured in volt amperes ( V . A ) while truepower is measured in watts (W). The cosine of the angle by which the load current leads or lags thesupply voltage in reactive loads is called power factor , andhas to be taken into account when calculating the true power of thecircuit -so, in this case, true power is the product of supplyvoltage, load current, and power factor. To summarise, volt amperes are used to measure the apparent powerof a reactive load, while watts are used to measure its true power. (MORE)
It describes the power consumption of the two units when they're turned ON and operating. It MAY describe the difference in their brightness, and that's the way it's widely understood, but that's not necessarily true.
A watt meter measures the instantaneous power flow. In an AC power system, this is the product of the Voltage (V) and Current (I) magnitudes which are in-phase with each other. The Power Factor, or the Cosine of the angle (a) between the Current phasor and the Votage phasor, is the ratio of these in…-phase quantities. So, a watt meter measures V*I*Cos(a). A Var meter on the other hand measures Volt-Amperes Reactive, [ V*I*Sin(a) ] that is, the portion of the product of voltage and current which are NOT in-phase. (The term KVar refers to results which are read in 1000 Var increments) Vars cannot produce work, are therefore considered parasitic, and power companies don't like to produce or deliver vars to consumers because they reduce line capacity and cause heating of conductors. (MORE)
The watt is used to measure the true power of an a.c.load. It is the product of the supply voltage, the loadcurrent , and the power-factor of the load. The volt ampere is used to measure the apparent power of an a.c. load, which is the product of the supply voltage and the load current… . (MORE)
Those numbers describe the power used by the two bulbs, in otherwords how many joules of electrical energy they use per second. The100 watt bulb uses 40 watts more.
Watts is smaller than kilowatts. watts is unit of power and kilowatts hour is unit of energy. Electrical devices are specified in watts where as electrical bill is for kilowatt hr use.
Your question is asking about two entirely different things. The size and the wattage it is able to handle have nothing to do with each other except for the generalization that larger subwoofers can handle more wattage than smaller subwoofers.
No difference in case of DC. In case of AC Watt refers to Power which includes the factor of power factor. VA does not include power factor.
Running watts will be considerably less than starting watts Example a motor starting up might take 43 amps (At 208 volts = 8944 Watts) where when it is running it might be around 21 amps (At 208 volts =4368)
Volts is the unit of Voltage, denoted by 'V'. Watts is the unit of power consumed, denoted by 'W'. As per Indian Standards we are available with 230V single phase connections. And the incandescent bulbs calibrated with some 40W, 60W, 100W shows how much power will it consume for an hour of c…onsumption. Means a 40W bulb will draw 40W power on lighting it for an hour. Hope now its all clear with Volt and Watts difference. (MORE)
A Unit is a measure of energy used in billing. A Watt is a measure of power, which is how fast energy isconverted. Energy equals power times time, so 1 watt for 1 second defines 1Joule of energy. A Unit is a kilowatt-hour of energy, so 1000 watts for 3600seconds, 3.6 million Joules. Another Ans…wer A ' unit ' is derived from the expression, ' Board of TradeUnit '. The Board of Trade was the now-defunct Government bodywhich regulated energy prices in the UK. A unit is exactlyequivalent to a kilowatt hour , the unit of measurement ofenergy used by utility companies to charge consumers. A ' watt ' is used to measure the rate at which energyis delivered, and is equivalent to a joule per second (where thejoule is the SI unit of measurement for energy). (MORE)
The power it uses in a unit of time and the amount of light andheat it produces.