Question

A charge of `36 C` passes through a circuit every `9 s`. If the circuit can generate `72 W` of power, what is the circuit's resistance?

Answer 1

`R=4,5" " Ohm`

Explanation:

`"the electric current is described as "I=(Delta Q)/(Delta t)`

`I=36/9=4A`

`P=I^2*R`

`72=4^2*R`

`R=72/16`

`R=9/2`

`R=4,5" " Ohm`