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Two charges eachof q=+2 micro coloumb are placed at the vertices Q and R of the triangle .the sum of sides PQ and PR is 12cm and their product is 32 cm_2 .the potential at point P is?

Solution) In ΔPQR, Let PQ=8cm PR=4cm

At P, V=9*10⁹ {(2/4) + (2/8)}*10^-6*10² = 9*10⁹*(3/4)*10^-4 = 6.75*10⁵

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