Home
Class 12
PHYSICS
Two small balls having equal positive ch...

Two small balls having equal positive charge QC on each are suspended by two insulating strings of equal length L metre, from a hook fixed to a stand. The whole setup is taken into space where there is no gravity (state of weightlessness). Then the tension in the string is

A

`(1)/(4pi epsi_(0))(q^(2))/(4L^(2))`

B

`(1)/(4pi epsi_(0))(q^(2))/(L^(2))`

C

`(1)/(4pi epsi_(0)) (sqrt2q^(2))/(L^(2))`

D

`(1)/(4pi epsi_(0))(q^(2))/(2L^(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    AAKASH SERIES|Exercise Exercise-II|56 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|44 Videos
  • ELECTRIC FIELD AND POTENTIAL

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|32 Videos

Similar Questions

Explore conceptually related problems

Two small balls having equal positive charge Q C on each are suspended by two insulating strings of equal length L metre, from a hook fixed to a stand. The whole setup is taken into space where there is no gravity (state of weightlessness). Then the angle theta between the two strings is

Two small spheres each having equal positive charge Q Coulomb) on each are suspended by two insulating strings of equal length L (metre) from a rigid hook (shown) in figure). The whole set up is taken into satellite where there is 'no gravity. The two balls are now held by electrostatic forces in horizontal position, the tension in each string is then

Two charged particles having charge 2.0 xx 10^(-8)C . Each are joined by an isolating string of length 1m and the system is kept on a smooth horizontal task. The tension in the string.

AAKASH SERIES-ELECTRIC CHARGES AND FIELDS-Practice Exercise
  1. The ratio of the forces between two charges placed at a certain distan...

    Text Solution

    |

  2. Two point charges +2C and +6C repel each other with a force of 12N. If...

    Text Solution

    |

  3. Two small balls having equal positive charge QC on each are suspended ...

    Text Solution

    |

  4. The force between two charges 4C and -2C which are separated by a dist...

    Text Solution

    |

  5. Two charges 9 mu C and 1mu C are placed at a distance of 30cm. The pos...

    Text Solution

    |

  6. Three point charges Q(1), Q(2) and Q(3) in that order are placed equal...

    Text Solution

    |

  7. Tritium and helium are put 2 xx 10^(-10)m apart in air. Magnitude of i...

    Text Solution

    |

  8. 10C and 20C are separated by a distance d. If the electric field at th...

    Text Solution

    |

  9. A charge of mass .m. charge .2e. is released from rest in a uniform el...

    Text Solution

    |

  10. A charge of 10^(-10C is placed at the origin. The electric field at (1...

    Text Solution

    |

  11. Two point charges +8q and -2q are located at x=0 and x=L respectively....

    Text Solution

    |

  12. A hollow spherical conductor of radius 1m has a charge of 250mu C then...

    Text Solution

    |

  13. Two point charges q(A)= 3mu C and q(B) = - 3muC are located 20cm apart...

    Text Solution

    |

  14. The displacement bar(r ) of a charge Q in an electric field E= e(1) ha...

    Text Solution

    |

  15. A conducting sphere of radius R= 20cm is given a charge Q= 16 mu C wha...

    Text Solution

    |

  16. A 0.50 gm ball carries a charge of magnitude 10mu C. It is suspended b...

    Text Solution

    |

  17. Two equal and opposite charges of magnitude 0.2 mu C are 15 cm apart, ...

    Text Solution

    |

  18. Three charges each of +4mu C are the corners B, C, D of a square ABCD ...

    Text Solution

    |

  19. There are n electrons of charge on a drop of oil of density rho. It is...

    Text Solution

    |

  20. The electrons in a particle beam each have a kinetic energy of 1.6 xx ...

    Text Solution

    |