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The magnitude of the electric field requ...

The magnitude of the electric field required to just balance in air a `2 xx 10^(-4) kg` liquid drop carrying a charge of `10 xx 10^(-2) mu C` is

A

`10^(4) N//C`

B

`2 xx 10^(4) N//C`

C

`4 xx 10^(4) N//C`

D

`5 xx 10^(4) N//C`

Text Solution

Verified by Experts

The correct Answer is:
2
`qE = mg`
`E = (mg)/(q) = ( 2 xx 10^(-4) xx 10)/(10 xx 10^(-2) xx 10^(-6)) = 2 xx 10^(4) N//C`
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CP SINGH-ELECTROSTATICS-Exercises
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  2. An electron of mass m(e ) initially at rest moves through a certain di...

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  3. The magnitude of the electric field required to just balance in air a ...

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  4. A deuteron and an alpha-particle are placed in an electric field.The f...

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  5. A point charge q moves from point P to pont S along the path PQRS (fig...

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  12. A thin conducting ring of radius R is given a charge +Q, Fig. The ele...

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  13. Two parallel metal plates having charges +Q and -Q face each other at ...

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  14. Three is an electric field E in the x - direction. If the work done by...

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  15. Two large vertical and parallel metal plates having a separation of 1c...

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  16. A and B are two points in an electric field . If the work done in carr...

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  17. A particle of mass 'm' and charge 'q' is accelerated through a potenti...

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  18. Two charges 4 xx 10^(-8) C and -6 xx 10^(-8) C are at points A and B r...

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  19. Two positive charges of magnitude 4 C and 6 C are placed 10 cm apart ....

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  20. Four point charges -Q, -q, 2q and 2Q are placed, one at each corner of...

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