A simple pendulumhas a bob .|Electrostatics| JEE MAIN 2026

JEE MAIN 2026

22-01-2026 S2

Question

A simple pendulum has a bob with mass $m$ and charge q . The pendulum string has negligible mass. When a uniform and horizontal electric field $\vec{E}$ is applied, the tension in the string changes. The final tension in the string, when pendulum attains an equilibrium position is $\_\_\_\_$ .
(g : acceleration due to gravity)

Select the correct option:

$m g-q E$

$m g+q E$

$\sqrt{m^2 g^2+q^2 E^2}$

$\sqrt{m^2 g^2-q^2 E^2}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution