Electromagnetic Field Theory
Inside a hollow conducting sphere

 electric field is zero.
 electric field changes with distance from the center of the sphere.
 electric field is a non zero constant.
 electric field changes with magnitude of the charge given to the conductor.

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Electromagnetic Field Theory
Two spheres of radius r1 and r2 are connected by a conducting wire. Each of the spheres has been given a charge Q. Now

 both of sphere will have same potential.
 smaller sphere will have zero potential.
 larger sphere will have greater potential.
 larger sphere will have smalled potential.

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