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If a small sphere of mass m and charge q...

If a small sphere of mass m and charge q is hung from a silk thread at an angle `theta` with the surface of a vertical charged conducting plate, then for equilibrium of sphere, the surface charge density of the plate is

A

`epsilon_(0)((mg)/(q))tan theta`

B

`epsilon_(0)((2mg)/(q))tan theta`

C

`epsilon_(0)(mgq)tan theta`

D

`epsilon_(0)((mg)/(3q))tan theta`

Text Solution

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The correct Answer is:
A
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