ch24_p77 - qV where V = 1 4 πε 2 e 2 D 1 4 πε e D Using...

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77. We note that the net potential (due to the "fixed" charges) is zero at the first location ("at ") being considered for the movable charge q (where q = +2 e ). Thus, the work required is equal to the potential energy in the final configuration:
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Unformatted text preview: qV where V = 1 4 πε (+2 e) 2 D + 1 4 πε + e D . Using D = 4.00 m and e = 1.60 × 10 − 19 C, we obtain W app = qV = (2 e )(7.20 × 10 − 10 V) = 2.30 × 10 − 28 J....
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This note was uploaded on 01/25/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Spring '10 term at Kansas State University.

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