A charge of $5 C$ $5 C$ passes through a circuit every $2 s$ $2 s$ . If the circuit can generate $7 W$ $7 W$ of power, what is the circuit's resistance?

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Answer 1 · 2016-06-04T11:22:56

$R=28/25" "Omega$

$Delta q=5C" ; "Delta t=2" "s$

$I=(Delta q)/(Delta t)" the electric current passing from circuit"$

$I=5/2" "A$

$P:"Power ;R:Resistance"$

$P=I^2*R$

$7=(5/2)^2*R$

$7=25/4*R$

$R=(7*4)/25$

$R=28/25" "Omega$

A charge of 5 C5C5 C passes through a circuit every 2 s2s2 s. If the circuit can generate 7 W7W7 W of power, what is the circuit's resistance?