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## Homework Statement

A square coil of wire has sides of length 10mm, consists of 2000 turns and has a resistance of 250[tex]\omega[/tex]. The coil is placed in a magnetic field such that the normal to the plane of the coil is parallel to the direction of the field. When the coil is rotated through 180 degrees and total charge of 120[tex]\mu[/texC flows through the coil. What is the magnitude of the magnetic field? If the rotation of the coil takes 0.2s what is the maximum voltage induced? (assume the coil is rotated at a constant rate)?

## Homework Equations

Not sure - if I knew them I could probably do it!

## The Attempt at a Solution

I'm not sure - most of the equations for this kind of situation don't seem to make sense with the variables given. For the first part I think I could probably get an answer if I had the current flowing, but I don't. I know I=Q/t, but again in the first part I don't have the time, so that approach is out.

I've just had another look, and I still can't see the answer, or how to approach it.Any hints?