1. The problem statement, all variables and given/known data 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? 2. Relevant equations potential difference for a distribution of charge v = [tex]\int[/tex] dq/r 3. 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.