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The line integral or an electric field a...

The line integral or an electric field along the circumference of a circle of radius r, drawn with a point charge Q at the centre will be.........

A

`(1)/(4pi epsilon_(0)r)(Q)/(r)`

B

`(Q)/(2epsilon_(0)r)`

C

Zero

D

`2 pi Qr `

Text Solution

Verified by Experts

Since electric field is a conservative field hence
`:. W = ointvecE.dvecl=0`
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KUMAR PRAKASHAN-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Section D ( Multiple Choice Questions (MCQs) )
  1. A proton is moving away from an electron, then find the change in pote...

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  2. Unit of line integration of electric field is ......

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  3. The line integral or an electric field along the circumference of a ci...

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  4. 2C electric charge Is displaced from a point of electric potential -20...

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  5. The work done by carrying, unit positive charge in an electric field u...

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  6. Which one of the following is not a unit of electric potential ?

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  7. Give dimensional formula of electric potential.

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  8. A particle having mass m and charge q is , rest. On applying a uniform...

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  9. For a uniform electric field vecE = E(0)(hati), if the electric potent...

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  10. The work done by the charge Q through displacement Delta vecr = a hati...

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  11. What is the diameter of sphere of 4V potential kept near the points si...

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  12. Two spheres or different radii are given equal amount of charge. The ...

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  13. Charges on two spherical shells of radius r(1) and r(2) are same, then...

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  14. Two metallic sphenrs of radil R(1) and R(2) are charged. Now they are ...

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  15. Electric field on surfaces of two spheres of radius r(1) and r(2) are...

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  16. Surface churgc densities on the spheres of radius r(1) and r(2) are s...

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  17. Potenlials of points P and Q are 10V and -4 V respectively. Work done...

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  18. A point P al a certain distance from charge Q has electric potential 6...

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  19. The spheres of radius r and R having charge q and Q respectively on th...

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  20. The spherical shell has radius r. The potential difference V is betwee...

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