Question

100j of heat is produce each second in a 4 ohm resistance . Find the potential difference across the resistor .

Answer 1

Explanation:

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Answer 2

Answer:First we find I

So, heat=100J

R=4ohm

T=1second

V=?(to find)

H=I^2RT

So,I^2=H/RT

I=root(H/RT)

=root{100J/(4ohm×1sec)}

=root(100/4)

=10/2. (root100=10&root4=2)

=5A

So, I=5A

Now, according to ohm's lawV=IR

5A×4Ohm

=20V

Explanation: