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A neutral conductor completely encloses a hole inside of it. You observe the outer surface of this conductor carries a charge of -12 uC. (a) Can you conclude that there is a charge inside the hole? If so, what is the charge? (b) How much charge is on the inner surface of the conductor?

ok there wouldn't be any charge on the outside correct? so if there isn't any charge on the inside, but there is charge on the inner surface of the conductor right? I am confused!

  • physics - ,

    a) They already said that there IS an outer surface charge, and they told you what it is. Its value equals that of the charge inside the hole. That is necessary to make the charge inside the conductor zero, according to Gauss' Law.

    b) There is an inner surface charge also. It is the opposite of the charge inside the hole, since there can be no E-field between the two surfaces of the conductor

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