Question

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?

Answer 1

The circuit's resistance is `0.25 Omega`

Explanation:

First, we need to calculate current in the circuit
`I=Q/t=36/6=6 A`
The power the circuit generate
`P=U*I=I^2*R=9 W`
`R=9/6^2=0.25 Omega`