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

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Answer 1 · 2016-04-17T11:25:00

$0.875Omega$

Resistance is power divided by the current squared, or

$R=P/I^2$ .

Putting in the values from the question,

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

If a current of 8 A8A8 A passing through a circuit generates 56 W56W56 W of power, what is the resistance of the circuit?