I have a huge problem to work out..(adsbygoogle = window.adsbygoogle || []).push({});

but first, i cant find the equations for

(1) electrostatic potential of the center of a square (a charged particle at each vertice)

and

(2) the magnitude of electric field at the center of the same square.

These are both questions to two arrangements, one with positive and negative particles at opposite ends, and arrangement 2 with both negative on right vertices and both positive on left vertices..

thanks

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# Homework Help: Electricity and Magnetism

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