Question

A pendulum bob of mass 80 mg and carrying a charge of $2 \times 10^{-8} C$ is at rest in a horizontal uniform electric field of 20000 V/m. Find the tension in the thread of the pendulum and the angle it makes with the vertical. [$Take g = 9.8 m/s^2$.]

Answer 1

answer:

angle = 28°

tension= 0.89 mN

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