Question

A simple pendulum is suspended in horizontal uniform
electric field of 20 x103 volt/meter. Mass and charge of
bob of pendulum is 8 mg and 39.2x10-10 Crespectively. If
simple pendulum is in equilibrium then angle made by the
string of pendulum with vertical is - and
(1) 27°
(2) 45°
(3) 87°
(4) 127°​

Answer 1

Answer:

20*103 volt meter is equal to twice as much of the pendulum as it is vertical *8 *39