If a current of $5 A$ $5 A$ passing through a circuit generates $45 W$ $45 W$ of power, what is the resistance of the circuit?

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Answer 1 · 2016-01-01T05:01:06

$1.8 \Omega$

Equations you can work with electrical work are

$P = IV = I^2R=V^2/R$

Given in the problem are:
$I = 5A$
$P = 45 W$

Make use of the equation $P = I^2R$ where $R = P/I^2$

Therefore,
$R = (45W)/(5A)^2 = 1.8 \Omega$

If a current of 5 A5A5 A passing through a circuit generates 45 W45W45 W of power, what is the resistance of the circuit?