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

$3.6 \Omega$
Power $P = {I}^{2} R$ where $I$ is the current and $R$ is the resistance.
$\therefore R = \frac{P}{I} ^ 2 = \frac{90}{25} = \frac{18}{5} = 3.6 \Omega$