Will a 110 electric heater produce the same amount of heat as a 220 heater at 1000 watts?

Answer 1

The load is a resistive load and as such it is governed by Ohm's law. Current is directly proportional to the voltage and inversely proportional to the resistance. As the voltage goes down so does the current. 2200 watt heater at 220 volts = 10 amps. R = E/I = 220/10 = 22 ohms of resistance in the heater. Now take the 2200 watt heater and using the same formula and at 110 volts. I = E/R, Amps = Volts / Resistance. 110/22 = 5 amps. As you can see ohm's law holds true, the current is inversely proportional to the resistance and as the voltage goes down so does the current. To answer the question, yes a 220 volt heater will run on a 110 volt circuit but at a reduced wattage. W = A x V = 5 x 110 = 550 watts.

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A 2200 watt heater at 220 volts would draw 1/2 the current of a 2200 watt heater at 110 volts.

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A 2200 watt heater at 220 volts is 22 ohms of resistance. Resistance would not change with the voltage, current would only be 5 amps (a resistor is a current limiter, it will only let more current through if you apply more voltage not less); but the wattage would only be 550 watts. This would only give you a fourth of the power this heater was designed for! The heater and the wires would have less heat.

Answer 2

No, a 1000-watt electric heater operating at 110V will produce the same amount of heat as a 1000-watt heater operating at 220V. The power output (in watts) determines the amount of heat produced, not the voltage.

Answer 3

Yes