Question

If a current of `5 A` passing through a circuit generates `100 W` of power, what is the resistance of the circuit?

Answer 1

`4 Omega`

Explanation:

We know, powe `P` generated across a resistor of resistance `R` due to current flowing `I` are related as,

`P=I^2 R`

given, `I=5A,P=100W`

So, `R=P/I^2=100/5^2=100/25=4 Omega`