Question

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5+3 pts
A simple pendulum is suspended in horizontal uniform electric field of 20×10³ volt/m. Mass and charge of Bob of pendulum is 8 mg and 39.2×10^-10 respectively. If simple pendulum is in equilibrium then angle made by the string of pendulum with the vertical.
1. 27°
2. 45°
3. 87°
4. 127°

Answer 1

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