A charge of $40 C$ passes through a circuit every $5 s$ . If the circuit can generate $16 W$ of power, what is the circuit's resistance?

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Answer 1 · 2016-10-26T07:41:19

$R=1/4=0.25" "Omega$

$"first,find circuit's current"$

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

$I=40/5=8A$

$"now use power equation."$

$P=I^2*R$

$P:"Power"$

$I:"Current"$

$R:"Power"$

$16=8^2*R$

$16=64*R$

$R=cancel(16)/cancel(64)$

$R=1/4=0.25" "Omega$

A charge of 40 C40 C passes through a circuit every 5 s5 s. If the circuit can generate 16 W16 W of power, what is the circuit's resistance?