Home
Class 12
PHYSICS
On ortating a point charge having a char...

On ortating a point charge having a charge `q` around a chrage `Q` in a circla of radius `r`. The work done will be

A

`q xx 2pi r`

B

`(q xx 2pi Q)/r`

C

Zero

D

`Q/(2 epsilon_0 r)`

Text Solution

Verified by Experts

The correct Answer is:
C

Because of equipotential surface.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Dipole)|21 Videos
  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Flux and Gauss.s Law)|27 Videos
  • ELECTROSTATICS

    ERRORLESS|Exercise ASSERTION & REASON|25 Videos
  • ELECTRONICS

    ERRORLESS|Exercise Assertion & Reason|26 Videos
  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

Similar Questions

Explore conceptually related problems

Statement-I : A point charge Q is rotated in a circle of radius r around a charge q. The work done will be zero. Statement-II : For this motion the force is along the radius and direction of motion is perpendicular

A point charge Q is moved along a ciruclar path around another fixed point charge. The work done is zero

The force between two points charges +q and -q, separated by a distance r is F. if one charge remains stationary while the other moves around it in a circle of radius r, then the work done is given by

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 ofradius r about :

The work done in carrying a charge q once round a circle of radius r with a charge Q at the centre is

A particle of mass m and carrying charge -q_(1) is moving around a charge +q_(2) along a circular path of radius r period of revolution of the charge -q_(1) about +q_(2) is

ERRORLESS-ELECTROSTATICS-NCERT BASED QUESTIONS (Electric Field and Potential)
  1. The work done in bringing a unit positive charge from infinite distanc...

    Text Solution

    |

  2. The top of the atomosphere is about 400 kV with respect to the surface...

    Text Solution

    |

  3. On ortating a point charge having a charge q around a chrage Q in a ci...

    Text Solution

    |

  4. Four point charges -Q, -q, 2q and 2Q are placed, one at each corner of...

    Text Solution

    |

  5. If a charged spherical conductor of radius 10 cm has potential V at a ...

    Text Solution

    |

  6. Electric charges of + 10 mu C, + 5mu C, - 3mu C and +9 mu C are placed...

    Text Solution

    |

  7. Two charges of 4 mu C each are placed at the corners A and B of an equ...

    Text Solution

    |

  8. Two electric charges 12 mu C and -6 mu C are placed 20 cm apart in air...

    Text Solution

    |

  9. Four point charges each +q is placed on the circumference of a circle ...

    Text Solution

    |

  10. The electric potential at the surface of an atmoic nucleus (Z = 50) of...

    Text Solution

    |

  11. Two point charges -q and +q are located at points (0,0-a) and (0,0,a) ...

    Text Solution

    |

  12. How many lines of symmetry does the above figure have ? <img src="ht...

    Text Solution

    |

  13. A hexagon of side 8 cm has a charge 4 muC at each of its vertices. The...

    Text Solution

    |

  14. Four electric charges +q, +q, -q and -q are placed at the corners of a...

    Text Solution

    |

  15. Two charged spheres of radii R(1) and R(2) having equal surface charge...

    Text Solution

    |

  16. Two charged spherical conductors of radius R1 and R2 are connected by ...

    Text Solution

    |

  17. A small conducting sphere of radius r is lying concentrically inside a...

    Text Solution

    |

  18. Three concentric spherical shells have radii a, b and c(a lt b lt c) a...

    Text Solution

    |

  19. Consider three concentric metallic spheres A, B and C of radii a, b, c...

    Text Solution

    |

  20. A conducting sphere of radius R is given a charge Q. The electric pote...

    Text Solution

    |