66. A small drop of water is suspended motionless in air by a uniform electric field...

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Answer 1

Answer #1

here drop can be balanced by upward electrostatic force which balances the weight of the drop.

and number of electrons or protons we can get by using quantization of charge.

q= ne as solved below Solutton: balance the hop in a* Shoutd be n upwe or n +he d、rection at elec mc field the retare directイの ton) ecdenton to

Answer 2

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