You need to know amps to answer this...
Amps x Volts=watts
Only when the load is purely resistive.
A VA is a volt-ampere, or volt-amp, and a kilo (K) is one thousand. This makes a KVA a kilovolt-ampere, or kilovolt-amp. If we have 1,000 volt-amps, and one volt times one amp is equal to one watt (W), which it is, 1,000 volt-amps is equal to 1,000 watts, or 1 KW. All that said, 1 KVA is equal to 1 KW.Sometimes in an ac system, the watts is less than the volts times the amps, and in that case the watts is equal to the volts times the amps times the power factor. The power factor is less than one. The power factor for a typical electric motor is 0.7, so then there are only 700 watts in a kVA.
On a 120 volt supply, up to 360 watts. On a 240 volt supply, up to 720 watts.
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
Watts is found by multiplying the volts by the amps. Normally a supply is provided at a fixed voltage, and the amount of current that is drawn depends on how many watts the equpiment requires.
Only when the load is purely resistive.
A VA is a volt-ampere, or volt-amp, and a kilo (K) is one thousand. This makes a KVA a kilovolt-ampere, or kilovolt-amp. If we have 1,000 volt-amps, and one volt times one amp is equal to one watt (W), which it is, 1,000 volt-amps is equal to 1,000 watts, or 1 KW. All that said, 1 KVA is equal to 1 KW.Sometimes in an ac system, the watts is less than the volts times the amps, and in that case the watts is equal to the volts times the amps times the power factor. The power factor is less than one. The power factor for a typical electric motor is 0.7, so then there are only 700 watts in a kVA.
When we look at transformers, we'll generally see that watts in will equal watts out. Said another way, volt-amps in equal volt-amps out. There is a simple relationship between the turns ratio between the primary and secondary and the voltages between those two windings. From there, it's a hop, skip and a jump to figuring out currents. In a one to one transformer, volts in equal volts out. Current in will equal current out, too. Watts in will equal watts out. In a step down transformer with, say, a 10:1 ratio, 120 volts in will produce 12 volts out. And a 1 amp secondary current will appear as a 0.1 amp current in the primary. The 120 volts x 0.1 amps = 12 watts. And the 12 volts x 1 amp = 12 watts. Volt amps in equals volt-amps out, and power in equals power out. Simple and easy. If you are using a step up transformer in, say, a 110 volt to 220 volt application, 110 watts in the primary at the 110 volts will be 1 amp. In the secondary side, 220 volts will appear and 0.5 amps will be the current flow. The 220 volts times the 0.5 amps is 110 watts, as asked about. The secondary has twice the voltage and half the current of the primary side. There are 110 watts in and 110 watts out. Again, simple and easy.
Ohms does not equal watts. You need to know what voltage is across the resistor to determine how many watts it is drawing or how many watts the resistor should be rated for.Power is the voltage across the resistor SQUARED divided by the resistance. If this 4 ohm resistor has 12 volts across it then the watts power is (12 x 12) / 4 = 36 watts.1 Watt equals 1 Volt times 1 Amp.
It is expressed in Volt-Amperes not Watts.
Watts is found by multiplying the volts by the amps. Normally a supply is provided at a fixed voltage, and the amount of current that is drawn depends on how many watts the equpiment requires.
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
On a 120 volt supply, up to 360 watts. On a 240 volt supply, up to 720 watts.
Solar panels are rated in watts output. To find the amperage use this equation, Amps = Watts/Volts. The wattage will be on the nameplate of the solar panel.
One volt is zero watts.
Not sure about how many Watts your 36 volt charger uses, but you can find out by this formula... Volts X Amps = Watts.
It depends entirely on the power factor of the load. If the power factor is unity (1), then the true power, in watts, will equal the apparent power in volt amperes. If the power factor is zero, then the true power, in watts, will be zero. This is because true power (watts) is equal to the apparent power (volt amperes) multiplied by the power factor.