Hey all smartie-pants!(adsbygoogle = window.adsbygoogle || []).push({});

So this is the problem I have a tough time with:

The magnetic field perpendicular to a single 13.2-cm-diameter circular loop of copper wire decreases uniformly from 0.750T to zero. If the wire is 2.25mm in diameter, how much charge moves past a point in the coil during this operation?

This is what I was able to come up with:

I need to find the circumference, which will give me the length of the wire, which will help me find the resistance of the wire. Knowing that, I can find out the current, which they are looking for?

But what about time? Don't I need time to find out the flux??

Thanks so much for any help!!

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# Homework Help: Induced Magnetic Fields

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