Electromagnetic Field Theory
A point charge in space is attracted towards a dielectric material because of the

 maximisation of electrostatic flux.
 dielectric hysteresis.
 phenomenon of dielectric polarisation.
 all of above.

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Electromagnetic Field Theory
Inside a hollow conducting sphere

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

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