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A charged oil drop is suspended in unifr...

A charged oil drop is suspended in unifrom of `3 xx 10^(4)` V/m so that it neither falls nor rises. The charge on the drop will be `("take the mass of the charge " = 9.9 xx 10^(-15) kg & g = 10 m//s^(2))`

A

`3.3 xx 10^(-18)C`

B

`3.2 xx 10^(-18)C`

C

`1.6 xx 10^(-18)C`

D

`4.8 xx 10^(-18)C`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-ELECTROSTATICS-PRACTICE SHEET (EXERCISE - II INTENSITY OF ELECTRIC FIELD) (LEVEL - I (MAIN) STRAIGHT OBJECTIVE TYPE QUESTION)
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  15. The electric field at distance .r. from infinte line of charge ("havin...

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  17. A charged disc of radius 3 m has charge density sigma. Electric field ...

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