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

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

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The correct Answer is:
B
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AAKASH SERIES-ELECTRIC CHARGES AND FIELDS-Exercise-II
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