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Three charges, each equal to q, are placed at the three corners of a square of side a. Find the magnitude of electric field at the fourth corner.

1 Answer

$E= \large\frac{q}{8 \pi \in_0 a^2} $$[ 2 \sqrt 2 +1]$
Hence C is the correct answer.
answered Jun 2, 2014 by meena.p

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