# A charge of 36 C passes through a circuit every 6 s. If the circuit can generate 9 W of power, what is the circuit's resistance?

The circuit's resistance is $0.25 \Omega$
$I = \frac{Q}{t} = \frac{36}{6} = 6 A$
$P = U \cdot I = {I}^{2} \cdot R = 9 W$
$R = \frac{9}{6} ^ 2 = 0.25 \Omega$