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The work done in carrying a charge 'a' o...

The work done in carrying a charge 'a' once round a circle of radius 'a' with a charge Q at its centre is

A

`(Q_(1)Q_(2))/(4 pi epsilon_(0)R^(2))`

B

zero

C

`(Q_(1)Q_(2))/(4 pi epsilon_(0)R)`

D

infinite

Text Solution

Verified by Experts

The electric field is conservtive. Therefore, no work is done in moving a charge around a closed path in a electric field.
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FULL MARKS-ELECTROSTATICS -ADDITIONAL QUESTIONS SOLVED ( Multiple choice questions : )
  1. A hollow metal sphere of radius 10 cm is charged such that the potenti...

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  2. A 4 muF capacitor is charged to 400 V and then its plates are joined t...

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  3. The work done in carrying a charge 'a' once round a circle of radius '...

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  4. Two plates are 2 cm apart. If a potential difference of 10 V is applie...

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  5. The capacitance of a parallel plate capacitor does not depend on

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  6. A capacitor of 50 muF is charged to 10 volts. Its energy in joules is

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  7. A cube of side b has a charge q at each of its vertices. The electric ...

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  8. Total electric fulx coming out of a unit positive charge put in air is

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  9. Electron volt (eV) is a unit of

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  10. A point Q lies on the perpendicular bisector of an electric dipole of ...

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  11. A hollow insulated conducting sphere is given a positive charge of 10 ...

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  12. A particle of charge q is placed at rest in a uniform electric field E...

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  13. Dielectric constant of metals is

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  14. When a positively charged conductor is earth connected

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  15. The SI unit of electric flux is

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  16. Twenty seven water drops of the same size are charged to the same pote...

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  17. A point charge +q is placed at the midpoint of a cube of side l. the e...

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  18. Energy of a capacitor of capacitance C, when subjected to a pontential...

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  19. The electric potential at the centre of a charged conductor is

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  20. The energy stored in a capacitor is given by

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