It is not possible to answer this question as there is not enough information. The numbers of watts is a measure of the amount of energy being "used" per second. e.g. If a light bulb is rated at 100 watts this means 100 joules of energy are being "used" per second by the bulb. To be able to calculate the number of watts in 7400 volts we also need the current, which is measured in amps. Amps are a measure of the amount charge flowing around an electrical circuit per second. e.g. 13 amps means 13 coulombs of charge are flowing round the circuit per second. A volt can be though of at "the amount of energy in each coulomb" - although this is not the definition a physacist would give you! So multiplying volts and amps will give the number of watts. For example, if your 7400 volts are causing a current of 13 amps to flow, then the power will be: 7400 x 13 = 96200 watts (or 96.2 kW).
Another Answer
Your question is equivalent to asking 'How many kilometres per hour is 20 metres?'
Yes, you can plug in a 12 volt pump to a 400 watt inverter as long as the pump's power requirements do not exceed 400 watts. Make sure the inverter is designed to convert 12 volts DC to 120 volts AC to power the pump effectively.
ummm...4(?) is this a trick question?
Per hour the answer is 400 watt-hours or 0.4 kW-hours (or units).
If the voltage supplied to the lamps is its operating voltage both lamps will have relatively the same output in brightness. If the 60 watt 110 volt lamp is used on a 220 volt supply, it will glow very brightly and then the lamp's filament will burn open. If the 60 watt 220 volt lamp is used on a 110 volt supply, the lamp will glow at half brightness, but it will last for a very long time before the filament burns open.
A volt is the unit of electric potential, an amp is the unit of electric current, and a watt is the unit of power. The relationship between them is described by the equation: Power (in watts) = Voltage (in volts) x Current (in amps).
Yes, you can plug in a 12 volt pump to a 400 watt inverter as long as the pump's power requirements do not exceed 400 watts. Make sure the inverter is designed to convert 12 volts DC to 120 volts AC to power the pump effectively.
Probably about 180 watts, assuming 90% efficiency.
It will power two 400 watt lamps.
There is no volt meter or amp meter in a DC watt meter.
17
This question does is not answerable. A watt is a volt times an amp. With out knowing how many amps the bulbs use there is no answer.
calculation for Watts is = volts X amps P=IE P= Power(WATTS) I = Current(AMPS) and E = Voltage(VOLTS). So: I = P/E and E = P/I therefore: 1 watt = 1 ampere x 1 volt If you havea 240 volt lamp that is drawing .5 amp then it is using 120 Watts
To convert 400 Watt hours to BTU, you need to multiply by 3.412 to get the energy in BTU. So, 400 Watt hours is equivalent to approximately 1364.8 BTU.
ummm...4(?) is this a trick question?
A watt is the product of amperage times voltage.
Per hour the answer is 400 watt-hours or 0.4 kW-hours (or units).
Ampire. watt/volt