Question

A charge of `54 C` passes through a circuit every `6 s`. If the circuit can generate `12 W` of power, what is the circuit's resistance?

Answer 1

`R=4/27 ohm`

Explanation:

`"step-1: find the electric current using :" I=(Delta Q)/(Delta t)`
`I=54/6=9A`
`"step-2: find resistance using power equation :" P=I^2*R`
`12=9^2*R`
`R=cancel(12)/cancel(81)`
`R=4/27 ohm`