Question

If a current of `8 A` passing through a circuit generates `56 W` of power, what is the resistance of the circuit?

Answer 1

`0.875Omega`

Explanation:

Resistance is power divided by the current squared, or

`R=P/I^2`.

Putting in the values from the question,

`R=56/8^2=56/64=0.875Omega`