Question

A molecule has dipole moment of $6.2 \times 10^{-30} \text{ Cm}$. This molecule is placed in an electric field of $1.5 \times 10^4 \text{ N/C}$. The maximum torque exerted on molecule is :

• A. \(9.3 \times 10^{-26} \text{ Nm} \)
• B. \(10.3 \times 10^{-23} \text{ Nm} \)
• C. \(11.3 \times 10^{-26} \text{ Nm} \)
• D. \(12.3 \times 10^{-23} \text{ Nm} \)

Hint:

Torque is zero when the dipole is aligned with the field ($\theta = 0^\circ$ or $180^\circ$) and maximum when it is perpendicular ($\theta = 90^\circ$).

Answer 1

The Correct Option is A