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A pendulum bob of mass m = 80 mg, carryi...

A pendulum bob of mass m = 80 mg, carrying a charge of `q=2xx10^(-8)C`, is at rest in a horizontal, uniform electric field of E = 20,000 V/m. The tension T in the thread of the pendulum and the angle `alpha` it makes with vertical, is (take `g=9.8m//s^(2)`)

A

`alpha~~27^(@)`

B

`T~~880muN`

C

`T=8.8muN`

D

`alpha~~35^(@)`

Text Solution

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The correct Answer is:
A, B
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