A charge of $36 C$ passes through a circuit every $6 s$ . If the circuit can generate $9 W$ of power, what is the circuit's resistance?

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Answer 1 · 2016-04-09T11:11:16

The circuit's resistance is $0.25 Omega$

First, we need to calculate current in the circuit
$I=Q/t=36/6=6 A$
The power the circuit generate
$P=U*I=I^2*R=9 W$
$R=9/6^2=0.25 Omega$

A charge of 36 C36 C passes through a circuit every 6 s6 s. If the circuit can generate 9 W9 W of power, what is the circuit's resistance?