Question

the potential difference between the terminals of an electric heater is 60 volt when it draws a current of 4A from the source what current will the heater draw if the potential difference in increased to 120 volts ​

Answer 1

Explanation:

R= 60/4 = 15ohms. current= ? = 120/15 = 8A. Potential difference is increased to 120V then the current drawn is 8A.

Answer 2

Explanation:

ANSWER

V=60VI=4A

R=

I

V

=

4

60

=15Ω

When potential difference is increased to 120V

I=

R

V

=

15

120

=8A

The current through the heater becomes 8A

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