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Standard XII
Physics
Charging by Induction
The associate...
Question

The associated figure shows an electric charge +q located at the centre of a hollow uncharged conducting metal sphere. Outside the sphere is a second charge +Q. Both charges are positive. Choose the description below that describes the net electrical forces on each charge in this situation.
303601_c1eb1d427eec438d99fcfa0582e4abd7.png

A
Both charges experience the same net force directed away from each other.
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B
No net force experienced by either charge.
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C
There is no net force on Q but a net force on q.
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D
There is no net force on q but a net force on Q.
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E
Both charges experience a net force but they are different from each other.
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Solution

The correct option is D There is no net force on q but a net force on Q.
We know that a conducting metallic shell acts as shield from outside electric field and there can't be electric field inside a shell due to outside charge.

Hence, there will be no force experienced by charge q .
But Q will experience force according to Coulomb's law.

Answer-(D)

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