P25_021 - 5 2 d 5 d + 5 d + 5 d = 5 q 8 . The zero of the...

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21. A charge 5 q is a distance 2 d from P , a charge 5 q is a distance d from P , and two charges +5 q are each a distance d from P , so the electric potential at P is V = q 4
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Unformatted text preview: 5 2 d 5 d + 5 d + 5 d = 5 q 8 . The zero of the electric potential was taken to be at inFnity....
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