Question

How much power is produced if a voltage of `3 V` is applied to a circuit with a resistance of `3 Omega`?

Answer 1

`P=3Wa`

Explanation:

`P=V*I`
`V=I*R`
`I=V/R`
`P=V*V/R`
`P=V^2/R`
`P=3^2/3`
`P=3Wa`