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A sphere carrying a charge of Q having w...

A sphere carrying a charge of Q having weight w falls under gravity between a pair of vertical plates at a distance of d from each other. When a potential difference V is applied between the plates the acceleration of sphere changes as shown in the figure, to along line BC. The value of Q is

A

`w/v`

B

`w/2V`

C

`wd/V`

D

`sqrt(2wd)/V`

Text Solution

Verified by Experts

The correct Answer is:
C
`QE=Mg`
`(QV)/d=w`
`Q=(wd)/V`
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