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An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in 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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- q.E and max.
- 2 q.E and min.
- q.E and p.E
- zero and min.
Correct Option: D
When the dipole is in the direction of field then net force is qE + (– qE) = 0 
and its potential energy is minimum = – P.E. = – qaE
