A charge of $40 C$ $40 C$ passes through a circuit every $8 s$ $8 s$ . If the circuit can generate $15 W$ $15 W$ of power, what is the circuit's resistance?

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Answer 1 · 2016-03-30T19:28:44

$R = 0, 6 Ohm$ $R=0,6 " Ohm"$

$given data:$ $"given data:"$
$Delta Q=40 C" charge"$
$Delta t=8 " "s$
$P=15W " Power"$

$R=?$

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

$I=40/8=5 A$

$P=I^2*R$

$R=P/I^2$

$R=15/5^2$

$R=15/25$

$R=3/5$

$R=0,6 " Ohm"$

A charge of 40 C40C40 C passes through a circuit every 8 s8s8 s. If the circuit can generate 15 W15W15 W of power, what is the circuit's resistance?