# Homework Help: Magnetic Field of a rotating Cylinder

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1. May 26, 2015

### Aavatar

1. The problem statement, all variables and given/known data.
Given an infinitely long charged metal cylinder that is rotating with an angular velocity $\omega$ The charge density per unit length is $\rho$. Find the magnetic field within the cylinder.

I'm trying to solve this problem by using Ampere's Law. But couldn't reach anywhere, if anyone could give me some hints, that would be great.
Thanks.

2. May 26, 2015

### BvU

Hello AA, welcome to PF !

Well, you have a relevant equation then: Ampere's law. How does it read ?
Fill that in under 2. in the template and show us how far you can get under 3.: attempt at solution.

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