Question

The potential difference between the terminals of electric heater is 60V, whenit draws a current of 4A from the source. The resistance of electric heater coil is​

Answer 1

Answer:

The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 120 V? We are given, potential difference V = 60 V, current I = 4 A. The current through the heater becomes 8 A

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Answer 2

Explanation:

We are given, potential difference V = 60 V, current I = 4 A. According to Ohm’s law,

R=V/I

=60V/4A

=15Ω

When the potential difference is increased to 120 V the current is given by current =

V/R

=120V/15

=8A

The current through the heater becomes 8 A.