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.

Answer»

2qE and MINIMUM
qE and pE
zero and minimum
qE and MAXIMUM

Solution :POTENTIAL ENERGY , U = -pE cos `theta`
For q = `0^(@)`, U = -pE, which is minimum


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