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In the questions , if the charges with ...

In the questions , if the charges with the same sign are interchanged then the work doen is

A

`(q^(2))/( 4pi epsilon_(0)a) ( 4 - 2sqrt(2))`

B

`(q^(2))/( 4pi epsilon_(0)a) (2sqrt(2)-4)`

C

`(q^(2))/( 4pi epsilon_(0)a) (4+2sqrt(2))`

D

Zero

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The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-ELECTROSTATIC POTENTIAL AND CAPACITANCE -ASSIGNMENT (SECTION-A) Objective Type Questions (Only one answer)
  1. In the electric field of a point charge ( + q) , placed at the centre ...

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  2. Four charges +q, -q, +q and -q are placed in order on the four consecu...

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  3. In the questions , if the charges with the same sign are interchanged...

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  4. A charged particle q is shot from a large distance towards another cha...

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  5. A charged partile is moved infinitesimally slowly from point A to B i...

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  6. There is an electric field E in x-direction. If the work done on movin...

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  7. A hollow conducting sphere is placed in an electric field produced by ...

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  8. Metallic sphere of radius R is charged to potential V. Then charge q i...

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  9. A charge q is distributed uniformly on the surface of a sold sphere of...

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  10. Two concentric conducting spheres of radii R and 2R are crrying charge...

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  11. If you want to protect a very sensitive instrument from presence of a...

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  12. The capacitance of a capacitor depends on

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  13. A parallel plate capacitor has capacitance of 1.0 F. If the plates are...

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  14. In an arrangement of two concentric conducting shells, with centre at ...

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  15. The equivalent capacitance between X and Y is

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  16. Four capacitors are connected as shown in the figure. The equivalent c...

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  17. The net capacitance of system of capacitance as shown in the figure be...

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  18. A parallel -plate capacitor is connected to a battery that maintains a...

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  19. The capacitance of an isolated conducting sphere of radius R is propor...

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  20. In the arrangement shown , find the equivalent capacitance between A ...

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