Question

A heater draws 5A current from a source . How much current will it draw if potential difference across its ends is doubled?

Answer 1

I is directly proportional to Voltage
So if V is doubled then I also doubles I.e I=10A

Answer 2

Hii...

U know ..that
V=IR/V

If potential difference is doubled the current flowing through the heater will also be doubled ..as ratio of V to I ...is constant..
V'=2V
so I = 2×5=10A..

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Hope this helps!