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Question

A thin metallic spherical shell contains a charge Q on its surface. A point charge q1 is placed at the center of the shell, and another charge q2 is placed outside the shell. All the three charges are positive. Then the force on charge q1 is :
157841_a2d689531e10492ea67a6fa6d5ba84c3.png

A
toward right
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B
toward left
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C
zero
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D
none of these
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Solution

The correct option is A zero
Electric field remains zero inside a metallic shell due to outside charges.
Since electric field is zero due to other charges, hence force will also be zero.

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