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Find out the expression for the potential energy of a system of three charges $q_1, q_2$ and $q_3$ located respectively at $r_1, r_2$ and $r_3$ with respect to the common origin O.

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$U= \large\frac{1}{4 \pi \in_0 } \bigg[ \large\frac{q_1.q_3}{|r_2-r_1|}+ \large\frac{q_2.q_3}{|r_3-r_2|}+ \large\frac{q_1.q_3}{|r_3-r_1|} \bigg]$
answered Jun 11, 2014 by meena.p

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