P25_025 - P . That distance is R 2 + z 2 , so the electric...

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25. (a) All the charge is the same distance R from C , so the electric potential at C is V = 1 4 πε 0 · Q R 6 Q R ¸ = 5 Q 4 πε 0 R , where the zero was taken to be at inFnity. (b) All the charge is the same distance from
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Unformatted text preview: P . That distance is R 2 + z 2 , so the electric potential at P is V = 1 4 Q R 2 + z 2 6 Q R 2 + z 2 = 5 Q 4 R 2 + z 2 ....
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