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May 25, 2015

Homework Help: Physics

Posted by Ashley on Tuesday, January 31, 2012 at 10:03pm.

A van de Graaff generator has a metal sphere of radius 14.2 cm. To what potential can it be charged before the electric field at its surface exceeds 2.01 x 106 N/C (which is sufficient to break down dry air and initiate a spark)?

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