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Four charges$q_1=1 \mu C,q_2=2 \mu C,q_3=1 \mu C$ and $q_4=4 \mu C$ are kept on the vertices of a square of side $1m.$ Find the electric potential energy of this system of charges.

1 Answer

$(A)\;-7.62 \times 10^{-2}J$
Hence A is the correct answer.
answered Jun 13, 2014 by meena.p

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