(a) A point charge q is inside a cavity in an uncharged conductor (Fig. 2.45). Is the...
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(a) A point charge q is inside a cavity in an uncharged conductor (Fig. 2.45). Is the force on q necessarily zero?
(b) Is the force between a point charge and a nearby uncharged conductor always attractive?
Transcribed Image Text:
Gaussian surface + + + + q• E #0 Conductor + X X + + E=0+ ++
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