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A pith ball of mass 9 xx 10^(-5)kg carri...

A pith ball of mass `9 xx 10^(-5)kg` carries a charge of `5mu C`. What must be charge in another pith ball placed directly 2cm above the given pith ball such that they are held in equilibrium?

A

`3.2 xx 10^(-11)C`

B

`7.84 xx 10^(-12)C`

C

`1.2 xx 10^(-13) C`

D

`1.6 xx 10^(-19)C`

Text Solution

Verified by Experts

The correct Answer is:
B
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