question_answer

Consider an electric dipole placed in a region of non-uniform electric field. Choose the correct statement out of the following options:

A)  The dipole will experience only a force

B)  The dipole will experience only a torque

C)  The dipole will experience both the force and torque

D)  The dipole will neither experience a force nor a torque

Correct Answer: C

Solution :

 Consider, a dipole AB placed in a non-uniform electric field. Clearly, \[\Rightarrow \] \[|{{F}_{A}}|\ne |{{F}_{B}}|\] Similarly,      \[|{{\tau }_{A}}|\ne |{{\tau }_{B}}|\] Thus, we can say that the dipole will experience a net force\[{{F}_{net}}=|{{F}_{A}}|-|{{F}_{B}}|\]and net torque\[{{\tau }_{net}}=|{{\tau }_{A}}|-|{{\tau }_{B}}|\]