An electric dipole has the magnitude of its charge as q and its dipole

1.	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. It its dipole moment is along the direction of the field, the force on it and its potential energy are, respectively.(a) 2qE and minimum (b) qE and pE(c) zero and minimum (d) qE and maximum
Answer» (c) zero and minimum Potential energy, U = -pE cos θ For q = 0°; U = -pE, which is minimum

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. It its dipole moment is along the direction of the field, the force on it and its potential energy are, respectively.(a) 2qE and minimum (b) qE and pE(c) zero and minimum (d) qE and maximum

Answer»

(c) zero and minimum

Potential energy, U = -pE cos θ

For q = 0°; U = -pE,

which is minimum

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