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A point charge q produces an electric fi...

A point charge q produces an electric field of magnitude `2NC^(-1)` at a point distance 0.25 m from it. What is the value of charge ?

A

`1.39xx10^(-11)C`

B

`1.39xx10^(11)C`

C

`13.9xx10^(-11)C`

D

`139xx10^(11)C`

Text Solution

Verified by Experts

The correct Answer is:
A
Electric field,`" E"=(q)/(4pi epsilon_(0)r^(2)) rArr q = 4pi epsilon_(0)r^(2)E`
`therefore" Charge, q"=((0.25)^(2)xx2)/(9xx10^(9))=1.39xx10^(-11)C`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROSTATICS-PRACTICE EXERCISE (Exercise 1 (TOPICAL PROBLEMS))
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  9. Figure shows electric field lines in which an electric dipole p is pla...

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  10. Charge q(2) of mass m revolves around a stationary charge q(1) in a ci...

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  11. If 10^(10) electrons are acquired by a body every second, the time req...

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  14. A cylinder of radius R and length L is placed in a uniform electric fi...

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  15. q(1),q(2),q(3) and q(4) are point charges located at points as shown i...

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  16. In a region of space, the electric field is given by vecE = 8hati + 4h...

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  17. Three identical point charges as shown in figure, are placed at the ve...

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  18. A charge Q is enclosed by a Gaussian spherical surface of radius R. If...

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  19. A charge q is placed at the centre of a cube of side l what is the el...

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