If a current of $7 A$ $7 A$ passing through a circuit generates $42 W$ $42 W$ of power, what is the resistance of the circuit?

Question

1287 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-06-20T18:00:50

$R=6/7 " "Omega$

$P=I^2*R$

$P:"Power "$
$I:"Current"$
$R:"Resistance"$

$P=42 W" "I=7A" "R=?$

$42=7^2*R$

$42=49*R$

$R=42/49$

$R=6/7 " "Omega$

If a current of 7 A7A7 A passing through a circuit generates 42 W42W42 W of power, what is the resistance of the circuit?