# A charge of 5 C passes through a circuit every 2 s. If the circuit can generate 25 W of power, what is the circuit's resistance?

$= 4 \Omega$
"Current"(I)=("Charge passed"(q))/("Time"(t))=5/2A=2.5A
$P o w e r \left(P\right) = {I}^{2} \times R$
Therefore Resistance $R = \frac{P}{I} ^ 2 = \frac{25}{2.5} ^ 2 = 4 \Omega$