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Posted by on Thursday, July 10, 2008 at 12:55pm.

Two adjacent corners of a square have charges q1 = +1.5 x 10-9 C and q2 = +4.0 x 10-9 C. The length of a side of the square L = 0.25 m. Find the EPE of a charge q3= -6.0 x 10-9 C placed at the 2 remaining corners.

  • Physics - , Thursday, July 10, 2008 at 5:09pm

    I assume that EPE stands for Electrical Potential Energy. Are you asking for the total EPE of the complete configuration of 4 charges? It is confusing when you talk of the EPE of A (one) charge q3 placed at two corners.

    The way you compute the EPE of one charge Q3, relative to a an energy of zero when the charge is at infinite dstance, is to add up the k Qi Q3/ri terms due to the other charges Qi at distance ri. k is Boltzmann's cosntant.

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