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NEET 2004 (AIPMT) · Electric Dipole

Electric Dipole question from NEET 2004 (AIPMT)

Q76NEET 2004 · AIPMTEasy

Electric Dipole

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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Answer: (c)

Uniform field: forces $+qE$ and $-qE$ cancel, so net force is zero.
$\vec{p}$ along $\vec{E}$ : $U = -pE$ , the minimum value.
So the answer is (c) zero and minimum.

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