How much power is produced if a voltage of $5 V$ is applied to a circuit with a resistance of $45 Omega$ ?

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Answer 1 · 2016-01-17T19:10:20

$P = 5/9$ Watts
or
$P = 0.5555$ Watts

We know:

$P = V^2/R$

$P = 5^2/45$

$P = 25/45$

$P = 5/9$ Watts

You can end the answer here or

$P = 0.5555$ Watts

How much power is produced if a voltage of 5 V5 V is applied to a circuit with a resistance of 45 Omega45 Omega?