(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If a current of 3.5 A flows through a wire for 25 minutes, how much charge passes through the wire?

I = 3.5

t = 25 min = 1500 seconds

2. Relevant equations

P=W/t

W=1/2qV

P=VI

3. The attempt at a solution

If P = W/t

and

W = 1/2qV

then

P = qV/2t

so (qV/2t) = VI

qV = 2tVI

q = 2tI

q = 2(1500)(3.5)

q = 10,500 C

.......................

the answer given by my teacher is 5250 C. So somewhere, I'm off by a factor of two. Can someone help me find my error? Or did my teacher make a mistake?

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# Homework Help: Find charge given current and time?

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