NEETPhysicsElectrostatics
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): An electric dipole placed antiparallel to a non-uniform electric field experiences a net force towards the region of weaker electric field. Reason (R): The net torque on an electric dipole is zero when it is placed antiparallel to an electric field. In the light of the above statements, choose the
Options
- ABoth Assertion and Reason are true and Reason is the correct explanation of Assertion.
- BBoth Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- CAssertion is true but Reason is false.
- DAssertion is false but Reason is true.
Correct answer
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Step-by-step solution
Assertion (A) is true: When an electric dipole is placed antiparallel to a non-uniform electric field, its dipole moment p is opposite to the electric field E . In this orientation, the negative charge of the dipole is located in the region of stronger electric field, while the positive charge is in the weaker field region. The force on the negative charge (opposite to E ) dominates, resulting in a net force that pushes the dipole towards the weaker electric field region. Reason (R) is true: The torque on a dipole