- #1

Seraph404

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## Homework Statement

A long, insulating cylindrical shell of radius .06 m carries a linear charge density of 8.5E-6 C spread uniformly over its outer surface. What would a voltmeter read if it were connected between the surface of the cylinder and .04 m above the surface?

## Homework Equations

potential difference for a distribution of charge v = [tex]\int[/tex] dq/r

## The Attempt at a Solution

I forget how to do a problem like this. I looked at some sources online, and for this, I first thought I could use gauss's law to find electric field, and then integrate E*dl... but I don't know what the height of my cylinder is in order to calculate it's surface area for Gauss's Law.

If possible, I would just like a few hints before I try to attempt the problem again. Maybe I'm forgetting about something.