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Consider the shown uniform solid insulat...

Consider the shown uniform solid insulating sphere of mass m with a short and light electric dipole moment `p hat(j)` embedded at its centre placed at rest on a horizontal surface. An electric field `E hat(i)` is suddenly switched on in the region such that the sphere starts ro/ling without sliding. Speed of the sphere when the dipole becomes horizontal for the first time is given as:

A

`sqrt((5 pR)/(m))`

B

`sqrt((10 pE)/(7 m))`

C

`sqrt((5 pE)/(2 m))`

D

zero

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