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A hot-water heater has an 8-ohm element that operates at 240 V The power that's consumed by this water heater is?

VOLTS x (VOLTS/OHMS) = WATTS 240 X (240/8) = 7200 Watts = 7.2KWatts


What would the ohm reading be on a digital meter for a 4500 watt baseboard heater?

To calculate the ohm reading of a 4500-watt baseboard heater, you would need to know the voltage it operates at. You can use the formula Ohms = (Voltage x Voltage) / Watts to find the resistance in ohms. For example, if the heater operates at 240 volts, the ohm reading would be approximately 12.8 ohms.


A 14 ohm conductor measures a current of 20 amps what is the voltage?

14 ohm X 20 A = 240 V (V=IR) the answer is 280 14x20 is 280!


How much current will an electric heater draw from a 110-volt line if the resistance of the heater when hot is 26.7 ohm?

4.12A. V=IR


8 ohm element that operates a 240 volts the power that's consumed is?

Assuming a pure resistive load Ohm's Law tells us 240 / 8 = Current = 30 Amps. Watts = Volts x Amps so 240 x 30 = 7,200 Watts = 7.2 KW.


What will happen if an electric water heater which is designed for operation at 240 volts is connected to 120 volts?

240 heater on 120 volts 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. For example take a 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 1/4 of the wattage that the heater is rated at. W = A x V = 5 x 110 = 550 watts.


What is the wattage of a 240V 500W heater when derated to 120V?

41.6


How much current at 240 volts passes through a wire with a resistance of 100 ohms?

current = voltage/resistanceAssuming the 240 volts is across the 100 ohm wire, 2.4 amperespower = current * voltageResulting in the wire dissipating 576 watts... One hot wire!


A 75 ohm light and a 150 ohm heater are connected in parallel to a 150 volt power source. What is the current through the 75 ohm lamp?

2 amps


What is the resistance of a lamp operating at 115 volts and using 0.25 amperes of current?

The resistance of a lamp operating at 115 volts and using 0.25 amp of current is 460. The relationship I used is Ohm's law.


A ohm light and a 150 ohm heater are connected in parallel to a 150 volt power source. what is the total resistance of the lamp and the heater?

50 ohms...!


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

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