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

An infinite line of charge with linear density λ = 7.5 μC/m is positioned along the axis of a thick insulating shell of inner radius a = 2.9 cm and outer radius b = 4.9 cm. The insulating shell is uniformly charged with a volume density of ρ = -612 μC/m3.

What is λ2, the linear charge density of the insulating shell?

2. Relevant equations

I know that linear charge density equals q/L and that volume density equals q/V

3. The attempt at a solution

I tried multiplying the volume density times the volume of the shell and then dividing by the length of the shell. But I ran into a problem because I don't really know what the length of a shell would be. I tried finding the circumference of the outer edge and then subtracting the circumference of the inner edge from that and using that number as my length, but it didn't work. When I did that, I got -1.9 μC/m as my answer

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# Homework Help: Charged Cylindrical Shell

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