Question

How much current does an electric heater draw from 220v line ,if the resistance of the resistance of the heater ( when hot) is 50 ohm?

Answer 1

Here's the answer to your simple question.

Voltage = 220 V
Resistance R = 50 Ω
Current drawn I = 220V/50 Ω = 4.4 A

Answer 2

Current  an electric heater draw from 220v line is 4.4 Amps.

Explanation:

• According to Ohm's Law it state that
• Ohm’s Law states is V=IR
• where V is voltage, I is current, and R is resistance.
• When we  divide both sides by R we get  V/R=I
• Substituting the value of Current (I) = Voltage (E) / Resistance (R).
• We get I= 220 volts / 50 Ohms = 4.4 Amps.
• The current drawn is found to be 4.4 amps
• Here we can assume that  no resistance will be lost to the wiring and to and from the heater.

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