Electrodynamics Test

Result

Electrodynamics Test - 3

Score
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Weekly Quiz Competition

Question 1
1 / -0

A hollow metal sphere has an inner radius of 10 cm and an outer radius of 20 cm. This hollow metal sphere carries no net electric charge. A small solid metal bell of radius 1.0 cm is located at the centre of the hollow sphere. The metal ball carries a positive charge of 200 nC. What is the electric charge (nC) on the outer surface of the hollow metal sphere?

A
10

B
200

C
20

D
-200

Solution

For a conducting shell if we place a charge inside the shell it will be reflected at the outer surface of the shell. Hence charge on the outer surface is 200nC