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an oil drop of a charge has a mass m kg. It is falling freely in air with terminal velocity v. THE ELECTRIC FIELD required to make the drop move upward with the same speed is

an oil drop of a charge has a mass m kg. It is falling freely in air with terminal velocity v. THE ELECTRIC FIELD required to make the drop move upward with the same speed is

Grade:12

1 Answers

Vikas TU
14149 Points
6 years ago
Dear Student,
From the Energy conservation priciple,
qE-w=|V2/V1|w
=> qE=2w
w=2mg and V2=V1
=> E=2mg/q.
Cheers!!
Regards,
Vikas (B. Tech. 4th year
Thapar University)

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