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a thin, metallic spherical shell contains a charge Q on it. a point charge q is placed at the centre of the shell and another charge q 1 is placed outside it. all the three charges are positive. the force on the central charge due to the shell is (a) towards left (b) towards right (c) upward (d) zero

a thin, metallic spherical shell contains a charge Q on it. a point charge q is placed at the centre of the shell and another charge q1 is placed outside it. all the three charges are positive. the force on the central charge due to the shell is 
(a) towards left
(b) towards right
(c) upward
(d) zero
 

Grade:12

2 Answers

Neeti
571 Points
8 years ago
Force on central charge due to the shell is zero because we know that for a body which has electric charge Q on it’s surface, the electric field due to the charge Q inside the body is zero. Therefore the central charge experiences zero force due to the shellbecause no field due to the charge on the surface of the shell is present inside the body.
Please feel free to ask any follow up doubt and approve the answer if you like it :)
vinodh kumar
33 Points
8 years ago
it is zero since there is no electric field inside the shell.It is also like the conductor. in conductor also the charge will always resides on the surface.

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