Question

For an electric dipole in a non-uniform electric field with dipole moment parallel to the direction of the field, the force F and torque τ on the dipole respectively are______.
Fill in the blank with the correct answer from the options given below.

• A. F = 0, τ = 0
• B. F ≠ 0, τ = 0
• C. F = 0, τ ≠ 0
• D. F ≠ 0, τ ≠ 0

Answer 1

Answer: (B)

F ≠ 0, τ = 0

Answer 2

In a non-uniform field, a net force acts on the dipole, but since the dipole moment is aligned with the field, there is no torque (τ = 0).