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yitriana
Nov2-09, 07:30 PM
1. The problem statement, all variables and given/known data
Find the points where the equipotential line is tangent to the thick black line


2. Relevant equations



3. The attempt at a solution

I thought that it was A, G and K, because there, the electric field is horizontal and thus perpendicular to the black line and electric field is always perpendicular to equipotential line. However, I am getting the answer wrong.

How do I approach this problem?

thaer_dude
Nov2-09, 09:17 PM
A part of the problem is missing. A diagram most likely.