KCET2022PhysicsElectrostatics
An electric dipole with dipole moment 4 10⁻¹⁹ C - m is aligned at 30^ with the direction of a uniform electric field of magnitude 5 10^4 NC ⁻¹ , the magnitude of the torque acting on the dipole is
Options
- A3 10⁻⁴ ~N - m
- B10⁻⁵ ~N - m
- C10 10⁻³ ~N - m
- D10⁻⁴ ~N - m
Correct answer
D. 10⁻⁴ ~N - m
Step-by-step solution
Given, for an electric dipole, dipole moment, p=4 10⁻⁹ C =30^ Magnitude of electric field, E=5 10^4 ~N / C Torque, =p E =4 10⁻⁹ 5 10^4 30^ =10⁻⁴ ~N - m