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A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume as shown in the figure. The electric field inside the emptied space is


(a)zero every where
(b)is not zero but uniform
(c)nonuniform
(d)zero at centre only

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Important Questions on Electrostatics
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Statement I: For practical purposes, the earth is used as a reference at zero potential in electrical circuits.
Statement II: The electrical potential of a sphere of radius with charge uniformly distributed on the surface is given by .

EASY
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and then:

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HARD
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HARD
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Two non-conducting spheres of radii and and carrying uniform volume charge densities and respectively, are placed such that they partially overlap, as shown in the figure. At all points in the overlapping region :
