Hello:
I have a 1500 watt coil water heater and it is hooked up to an AC generator. The coil heater is designed to work with 120 volts but the generator is supplying 136 volts. The company that makes the heater said that with 136 volts, the heater will produce 1250 watts instead of 1500 watts. I understand volts x amps = watts but also I thought that the resistance should not change, and if that is the case this defies Ohms Law. R= volts/current. does the resistance change with the higher voltage, and if so does that mean Ohms law only refers to the voltage drop across the resister, which has gone down instead of up with the higher voltage?
I have a 1500 watt coil water heater and it is hooked up to an AC generator. The coil heater is designed to work with 120 volts but the generator is supplying 136 volts. The company that makes the heater said that with 136 volts, the heater will produce 1250 watts instead of 1500 watts. I understand volts x amps = watts but also I thought that the resistance should not change, and if that is the case this defies Ohms Law. R= volts/current. does the resistance change with the higher voltage, and if so does that mean Ohms law only refers to the voltage drop across the resister, which has gone down instead of up with the higher voltage?