A charge of 15 C passes through a circuit every 5 s. If the circuit can generate 15 W of power, what is the circuit's resistance?

1 Answer
Mar 22, 2016

R=5/3 " ohm"

Explanation:

I=(Delta Q)/(Delta t)
Delta Q=15 C" "Delta t=5 " "s
I=15/5=3" "A
P=I^2*R" "P:Power" "" R:Resistance
15=3^2*R
15=9*R
5=3*R
R=5/3 " ohm"