Question

If a current of `4 A` passing through a circuit generates `12 W` of power, what is the resistance of the circuit?

Answer 1

0.75 ohms

Explanation:

The power generated by a circuit in terms of the current flowing through it and its resistance is given by:

`P=I^2R`

where,

`P` is the power generated;
`I` is the current through the circuit,
and `R` is the circuit's resistance.

Substituting the values, we have:

`12=(4)^2R`

`12=16R`

`R=12/16=0.75 Omega`