An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively.

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2q.E and minimum

q.E and p.E

Zero and minimum

q.E and maximum

answer is C.

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Detailed Solution

Force on each charge in dipole is same in magnitude and opposite in direction so net force is zero. P.E U = -PE cos0 = –PE minimum

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