Three point charges q,q and -q lie at three corners of an equilateral triangle of side length d with -q at the apex. If an electron is released from rest midway at the base (point P) what is its KE when its reasonably far away?
V = kq/r, U = qV
The Attempt at a Solution
I figured out the potential at P. The potential is positive. So the PE of an electron there is negative. If the electron has negative potential energy, why would it move? But Columbs Law predicts that it will move. I am so confused! What does the electron do?
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