A charge of $8 C$ $8 C$ passes through a circuit every $4 s$ $4 s$ . If the circuit can generate $3 W$ $3 W$ of power, what is the circuit's resistance?

Question

1331 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-14T18:16:49

$R = \frac{3}{4} O h m$ $R=3/4 Ohm$

$Delta q=8C" charge"$
$Delta t=4s " time"$
$P=3W" power"$
$R=?" resistance"$

$I=(Delta q)/(Delta t)$

$I=8/4=2A$

$P=I^2*R$

$R=P/I^2$

$R=3/2^2$

$R=3/4 Ohm$

A charge of 8 C8C8 C passes through a circuit every 4 s4s4 s. If the circuit can generate 3 W3W3 W of power, what is the circuit's resistance?