Example 1 · difficulty 2/5
An electric dipole of moment 6 × 10⁻⁷ C m is placed in a uniform electric field of 5 × 10⁴ N C⁻¹, with its axis making an angle of 30° with the field. The magnitude of the torque acting on the dipole is:
- A. 1.5 × 10⁻² N m
- B. 3.0 × 10⁻² N m
- C. 2.6 × 10⁻² N m
- D. 7.5 × 10⁻³ N m