Home
Class 12
PHYSICS
Three identical charges are placed at co...

Three identical charges are placed at corners of a equilateral triangel of side l. If force between any two charges is F, the work required to double the dimensiions of triangle is

A

`-3Fl`

B

`3Fl`

C

`(-3/2) Fl`

D

`(3/2) Fl`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (B) Chapter exercises|20 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (C) Chapter exercises|50 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise Check point 2.5|20 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY|Exercise Sec C|22 Videos

  • ELECTROSTATICS

    DC PANDEY|Exercise Medical entrances gallery|37 Videos

Similar Questions

Explore conceptually related problems

Three points charges are placed at the corners of an equilateral triangle of side L as shown in the figure:

Three identical charges are fixed at the corners of an equilateral triangle . If the force between any two charges is F , then the net electric force on each will be

Charge of 5 mu C each are placed at the corners of an equilateral triangle of side 10 cm. Then the force on each charge is :-

Three charges each 20muC are placed at the corners of an equilateral triangle of side 0.4m The potential energy of the system is

Three equal charges q are placed at the corners of an equilateral triangle of side A. (i) Find out potential energy of charge system. (ii) Calculate work required to decrease the side of triangle to a//2 . (iii) If the charges are released from the shown position and each of them has same mass m, then find the speed of each particle when they lie on triangle of side 2 a . .

Three equal charges q are placed at the corners of an equilateral triangle of side a. (i) Find out potential energy of charge system. (ii) Calculate work required to decrease the side of triangle to a/2. (iii) If the charges are released from the shown position and each of them has same mass m then find the speed of each particle when they lie on triangle of side 2a.

Three equal charges Q are placed at the three corners of an equilateral triangle of side length a. Work done in shifting a charge q from infinity to the centroid of the triangle is

Three point charges are placed at the corner of an equilateral triangle. Assuming only electrostatic forces are acting.

Three point charges q are placed at three vertices of an equilateral triangle of side a. Find magnitude of electric force on any charge due to the other two.

DC PANDEY-ELECTROSTATIC POTENTIAL AND CAPACITORS-(A) Chapter exercises
  1. An electron initially at rest falls a distance of 1.5 cm in a uniform ...

    Text Solution

    |

  2. A long, hollow conducting cylinder is kept coaxially inisde another lo...

    Text Solution

    |

  3. The potential at a point x ( measured in mu m) due to some charges sit...

    Text Solution

    |

  4. Three charges Q, +q and +q are placed at the vertices of a right-angle...

    Text Solution

    |

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

    Text Solution

    |

  6. The resultant capacitance between A and B in the following figure is e...

    Text Solution

    |

  7. In the following circuit, the resultant capacitance between A and B is...

    Text Solution

    |

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

    Text Solution

    |

  9. A parallel plate air capacitor has a capacitance C. When it is half fi...

    Text Solution

    |

  10. Charge Q is uniformly distributed on a dielectric rod AB of length 2l....

    Text Solution

    |

  11. The arc AB with the centre C and the infinitely long wire having line...

    Text Solution

    |

  12. Two charges q(1) and q(2) are placed 30 cm apart, as shown in the figu...

    Text Solution

    |

  13. Three identical metallic uncharged spheres A, B and C of radius a are ...

    Text Solution

    |

  14. The curve represents the distribution of potential along the straight ...

    Text Solution

    |

  15. Seven capacitors each of capacity 2 muF are to be so connected to have...

    Text Solution

    |

  16. A solid conducting sphere of radius a having a charge q is surrounde...

    Text Solution

    |

  17. Three identical charges are placed at corners of a equilateral triange...

    Text Solution

    |

  18. Two capacitors C(1) and C(2) = 2C(1) are connected in a circuit with a...

    Text Solution

    |

  19. Five identical plates each of area a are joined as shown in the figure...

    Text Solution

    |

  20. In the figure shown, what is the potential difference between the poin...

    Text Solution

    |