2. Suppose the charge on the sphere increases by ∆qin time ∆t. Then, in that time its potential increases by ∆∆Vqr=40πε, where ris the radius of the sphere. This means ∆∆qrV=40π. Now, ∆q= (iin– iout) ∆t, where iinis the current entering the sphere and
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.