Home
Class 12
PHYSICS
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 Q)/(4pi epsi_(0) a)`

B

`(q Q)/(4pi epsi_(0) a^(2))`

C

`(q)/(4pi epsi_(0) a)`

D

zero

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NEW JOYTHI PUBLICATION|Exercise Previous Year Questions|2 Videos
  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|16 Videos
  • MAGNETISM AND MATTER

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|13 Videos

Similar Questions

Explore conceptually related problems

A positive charge +q is located at a point, what is the work done, if a unit positive charge is carried once around this charge along a circle of radius r about this point ?

A circle is drawn with centre as charge +q. a. What is the work done in moving a charge +q from B to C along the circumference of the circle? If the charge +q is first taken from B to A and then from A to C, on which path work done will be more?

The time period of revolution of a charge q_1 and of mass m moving in a circular path of radius due to Coulomb force of attraction with another charge q_2, at its centre is

Two identical thin rings, each of radius 10 cm carrying charges 10 C and 5 C are coaxially placed at a distance 10 cm apart. The work done in moving a charge q from the centre of the first ring to that of the second is

Calculating the work done in eV in carrying a charge +e Coulomb through a potential rise of 100 volts. (1.0eV =1.6 xx 10^(-19)"joules")

The work done in placing a charge of 8 xx 10^(-18) coulomb on a condenser of capacity 100 microfarad is .

Find the fluz f the electric field through a spherical surface of radius R due to a charge of 10^(-7) C at the centre and another equal charge at a point 2R away from the centre (figure ).

NEW JOYTHI PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Competitive Exam Corner
  1. The equivalent capacitance betweeen A and B is ("in "muF)

    Text Solution

    |

  2. Identify the false statement.

    Text Solution

    |

  3. Two conducting spheres of radii 3 cm and 1 cm are separated by a dista...

    Text Solution

    |

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

    Text Solution

    |

  5. A parallel plate capacitor is charged to a potential difference of V v...

    Text Solution

    |

  6. Two particles A and B having equal charges +6 C, after being accelerat...

    Text Solution

    |

  7. Two identical thin rings, each of radius 10 cm carrying charges 10 C a...

    Text Solution

    |

  8. The electric potential V at any point (x, y, z) in space is given by V...

    Text Solution

    |

  9. Choose the correct statement.

    Text Solution

    |

  10. In a parallel plate capacitor, if the intervening medium of permittivi...

    Text Solution

    |

  11. The percentage error in measuring resistance with a metre bridge can b...

    Text Solution

    |

  12. An uncharged parallel plate capacitor filled with a dielectric of diel...

    Text Solution

    |

  13. Choose the wrong statement about equipotential surfaces.

    Text Solution

    |

  14. Three capacitors connected in series have an effective capacitance of ...

    Text Solution

    |

  15. A soap bubble is charged to a potential 12 V. If its radius is doubled...

    Text Solution

    |

  16. The energy stored in a capacitor of capacitance Chaving a charge Q und...

    Text Solution

    |

  17. A point charge of 2 C experiences a constant force of 1000 N when move...

    Text Solution

    |

  18. A charge Q is distributed over two concentric hollow spheres of radii ...

    Text Solution

    |

  19. The velocity acquired by a charged particle of mass m and charge Q acc...

    Text Solution

    |

  20. A 5muF capacitor is fully charged by a 12V battery and then disconnect...

    Text Solution

    |