A positive point charge is placed in a cavity inside a neutral conductor without

Question

A positive point charge is placed in a cavity inside a neutral conductor without transferring charge to the conductor, as shown in the figure to the right. What is the sign of the charge on the surface of the cavity and the outer surface of the conductor?

(a) There is no charge on the surface of the cavity or the outer surface of the conductor.

(b) There is a positive charge on the surface of the cavity, but no charge on the outer surface of the conductor.

(c) There is a negative charge on the surface of the cavity, but no charge on the outer surface of the conductor.

(d) There is no charge on the surface of the cavity, but a positive charge on the outer surface of the conductor.

(e) There is a negative charge on the surface of the cavity, and a positive charge on the outer surface of the conductor.

Multiple-Choice Homework Problem 7.6 [3 pt(s) A positive point charge is placed in a cavity inside a neutral con ductor without transferring charge to the conductor, as shown in the figure to the right. What is the sign of the charge on the surface of the cavity and the outer surface of the conductor conductor Select One of the Following: (a) There is no charge on the surface of the cavity or the outer surface of the conductor. (b) There is a positive charge on the surface of the cavity, but no charge on the outer surface of the conductor. (c) There is a negative charge on the surface of the cavity, but no charge on the outer surface of the conductor. (d) There is no charge on the surface of the cavity, but a positive charge on the outer surface of the conductor. (e) There is a negative charge on the surface of the cavity, and a positive charge on the outer surface of the conductor.

Explanation / Answer

Correct answer: Option (b): There is a positive charge on the surface of the cavity, but no charge on the outer surface of the conductor.

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