apply superposition pronciple..
i think u will get answeer from theer
A Ring of radius 'r' and has a charge of 'q' distributed uniformly over it's length . a small portion 'x' is cut of from the ring where x<<r . Find the Electric field due to the remaining portion at the center of the ring .
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2 Answers
Asish Mahapatra
·2009-08-27 19:26:45
find the electric field if only the portion 'x' was there. The electric field when it is removed will be just opposite direction of what u have got