Question

If a current of `5 A` passing through a circuit generates `90 W` of power, what is the resistance of the circuit?

Answer 1

`3.6Omega`

Explanation:

Power `P = I^2R` where `I` is the current and `R` is the resistance.

`:.R = P/I^2 = 90/25 = 18/5 = 3.6Omega`