A dipole with two electric... |JEE Main 2025| Electrostatics

JEE MAIN 2025

07-04-2025 S2

Question

A dipole with two electric charges of $2 \mu \mathrm{C}$ magnitude each, with separation distance $0.5 \mu \mathrm{~m}$, is placed between the plates of a capacitor such that its axis is parallel to an electric field established between the plates when a potential difference of 5 V is applied. Separation between the plates is 0.5 mm . If the dipole is rotated by $30^{\circ}$ from the axis, it tends to realign in the direction due to a torque. The value of torque is :

Select the correct option:

$2.5 \times 10^{-9} \mathrm{Nm}$

$5 \times 10^{-9} \mathrm{Nm}$

$2.5 \times 10^{-12} \mathrm{Nm}$

$5 \times 10^{-3} \mathrm{Nm}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution