Charge on Conductors: an Uncharged Conductor Has a Hollow Cavity

question 2

Multiple Choice

Charge on conductors: An uncharged conductor has a hollow cavity inside of it. Within this cavity there is a charge of +10 µC that does not touch the conductor. There are no other charges in the vicinity. Which statement about this conductor is true? (There may be more than one correct choice.)

• A) The inner surface of the conductor carries a charge of -10 µC and its outer surface carries no excess charge.
• B) The inner and outer surfaces of the conductor each contain charges of -5 µC.
• C) The net electric field within the material of the conductor points away from the +10 µC charge.
• D) The outer surface of the conductor contains +10 µC of charge and the inner surface contains -10 µC.
• E) Both surfaces of the conductor carry no excess charge because the conductor is uncharged.

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