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Calculation of potential of an grounded sphere ball with charges

  • Thread starter henry407
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Homework Statement


Consider an originally neutral conductor sphere of radius R with a cavity and a point charge Q1 inside the cavity.
(a)The conductor is grounded. Find the electric potential outside the conductor and the total charge on the conductor.

Homework Equations



The Attempt at a Solution


As shown on the figure I draw, I conclude that the E-field and the potential is zero by gauss law. Somehow, I think that is not possible as this question is followed up by 3 other questions which related to its potential. I hope someone could point out the mistake of the figure. Thanks a lot~
 

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  • #2
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Help~
 

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