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Unformatted text preview: o that a conducting sphere of radius R must be raised to such that a point charge Q located at s > R experiences no net electrical force. [Note: Recall that the image charge needed to cause V = 0 on a sphere of radius R has charge Q’ = -RQ/s and is located a distance a = R 2 /s from the center of the sphere.] 3. (GRE problem) [10 points] A cube has a constant electric potential V on its surface. If there are no charges inside the cube, the potential at the center of the cube is A. zero B. V/8 C. V/6 D. V/2 E. V Justify your choice....
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- Fall '99
- Electrostatics, Electric charge, Fundamental physics concepts, point charge