Electrostatics Calculations

1. Apr 2, 2005

jleahy

Hey all,

I'm trying to calculate the charge that forms on two adjacent and asymetrical cylinders when a voltage is put between them. The figures I was using was something like 1mm radius for one and 10mm radius for the other, a voltage of about 20kV and a seperation of a few cm.

I thought of using Q=CV, but I couldn't find the revelant equation for capacitance; that is, if there is one. As they are asymetric I'm not expecting for +Q to form on one and -Q on the other, so I'm unsure as to whether this even applies.

I've also tried using the electric field calculations, using work for voltage and all that, but can't quite work out how to tie all the maths together. Has anybody seen a problem like this before?