Question

A charge of `40 C` passes through a circuit every `5 s`. If the circuit can generate `40 W` of power, what is the circuit's resistance?

Answer 1

Charge =`40c`
Time=`5s`
`I=C/T`
I=`8A`
`P=I^2R`
`R=P/I^2`
`R=40/64=0.625ohm`