Question

How much power is produced if a voltage of `12 V` is applied to a circuit with a resistance of `72 Omega`?

Answer 1

Data:-
Voltage`=V=12V`
`Resistance=R=72 Omega`
`Power=??`
Sol:-

We know that:
`Power=V^2/R`

`Power=(12)^2/72=144/72=2`

`Power=2` Watt