Consider a hollow spherical conductor with total charge +6e. The outer and inner

Question

Consider a hollow spherical conductor with total charge +6e. The outer and inner radii are a and b, respectively. Calculate the charge on the sphere's inner and outer surfaces if a charge of -2e is placed at the center of the sphere. What is the total net charge of the sphere? Problems 7 and 8, you only need to choose one: Two point charges are placed at two of the corners of a triangle as shown in the figure. Find the magnitude and the direction of the electric field at the third corner of the triangle. Problem 8 and 9, you only need to choose one: A hollow metal sphere has inner and outer radii of 20.0 cm and 30.0 cm, respectively. As shown in the figure, a solid metal sphere of radius 10.0 cm is located at the center of the hollow sphere. The electric field at a point P, a distance of 15.0 cm from the center

Explanation / Answer

(5)

(a)

the total charge of the hollow sphere resides on its surface only as it is the conducting.

the total charge on inner surface is only the charge placed at center that is -2e.

the total charge on outer surface of the sphere is,

Q=6e-2e=4e

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