Home
Class 12
PHYSICS
Two small equal spheres carrying unlike ...

Two small equal spheres carrying unlike and unequal charges are placed 8 cm apart and attack each othwer with a force of `4xx10^(-5)`N. After they have been connected for a moment by a thin conducting wire, they repel each other with a force of `2xx10^(-5)`N. Calculate their original charges.

Text Solution

Verified by Experts

The correct Answer is:
`10.3xx10^(-9)C,2.76 xx 10^(-9)C`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC FIELD AND POTENIAL

    NN GHOSH|Exercise EXERCISE-B|35 Videos

  • ELECTRIC FIELD AND POTENIAL

    NN GHOSH|Exercise EXERCISE-B|35 Videos

  • DYNAMO, MOTOR, TRANSFORMER

    NN GHOSH|Exercise EXERCISE|8 Videos

  • ELECTROMAGNETIC INDUCTION

    NN GHOSH|Exercise EXERICISES-B|18 Videos

Similar Questions

Explore conceptually related problems

The distance between two equal balls having unlike charges is 2cm . The radii of the balls are much less than the distance between them. The balls attract each other with a force of 36xx10^(-5) N. After the ball have been connected by a wire and latter has been removed, the balls repel each other with a force of 20.25xx10^(-5) N. Determine the original charges on the balls

(a) Two identical spheres having positive charges are placed 3 m apart repel each other with a force 8 xx 10^(-3) N . Now charges are connected by a metallic wire, they begin to repel each other with a force of 9 xx 10^(-3) N . Find initial charges on the spheres. (b) Two identical spheres having charges of opposite sign are placed 3 m apart attract other with a force 2.4 xx 10^(-3) N . Now spheres are touched and then placed at original separation repel with a force 10^(-3) N . Find initial charges on the spheres.

Two equal magnetic poles placed 10 cm apart in air attract each other with a force of 0.4 xx 10^(-4)N . What should be the distance of separation between them so that the force of attraction of 0.6 xx 10^(-4)N ?

The centres of two identical small conducting spheres are 1m apart. They carry charge of opposite kind and attract each other with a force F. When they are connected by a conducting thin wire they repel each other with a force F//3 . What is the ratio of magnitude of charge carried by the sphere initially ?

The identical anions are placed 7xx10^(-10) m apart and experience of 4 xx 10^(-9) N. Calculate the charge present on each anion

Two small spheres, each carrying a charge q are placed r m apart and they interact with force F. If one of the sphere is taken around the other once in a circular path, the work done will be equal to

Two straight parallel wires, both carrying 10 ampere in the same direction attract each other with a force of 1xx10^(-3)N . If both currents are doubled, the force of attraction will be

Two charges 4 cm apart repel each other with a force of 2xx10^(-2) N in air. When a dielectric slab of thickness 1 cm is placed between them, The force is reduced to 1.5xx10^(-2) N. Calculate the permittivity of the dielectric.

NN GHOSH-ELECTRIC FIELD AND POTENIAL-EXERCISE
  1. Two charges of +4 xx 10^(-7)C and -8 xx 10^(-7)C are 20cm apart. Find ...

    Text Solution

    |

  2. A negative charge q(1)=50 xx 10^(-9)C and a positive charge q(2)=25 xx...

    Text Solution

    |

  3. Two pith balls,, each weighting 10mg are suspended from the sam point ...

    Text Solution

    |

  4. A ball of mass m=0.5kg is suspended by a thread and a charge q=0.1muC ...

    Text Solution

    |

  5. An alpha paritcle carrying an electric charge 3.2 xx 10^(-19)C is at a...

    Text Solution

    |

  6. A charges of 50 xx 10^(-9)C is placed at a point P. What amount of wor...

    Text Solution

    |

  7. A small uncharged sphere is placed in contact with an equal and simila...

    Text Solution

    |

  8. An electron is projected with an initial velocity of 10^(7)ms^(-1) int...

    Text Solution

    |

  9. A positive point charge 50mu C is located in the plane xy at a point w...

    Text Solution

    |

  10. Charges of +q,+2q,+q and -q, are placed at the cornersof a square ABCD...

    Text Solution

    |

  11. Two small equal spheres carrying unlike and unequal charges are placed...

    Text Solution

    |

  12. Two small conducters 0.3 m apart carry 10xx10^(-9)C and 20xx10^(-9)C o...

    Text Solution

    |

  13. An electron of mass 9xx10^(-31) kg carrying 1.6xx10^(-19)C starts from...

    Text Solution

    |

  14. Calculate the radius of a drop of water which remains suspended in the...

    Text Solution

    |

  15. ABCD is a square of side 0.2 M. Positive charges 2xx10^(-9)C,4xx10^(-9...

    Text Solution

    |

  16. Two charges +2xx10^(-9)C and -8xx10^(-9)C are placed 0.3 M apart in ai...

    Text Solution

    |

  17. Two charges 4 cm apart repel each other with a force of 2xx10^(-2)N in...

    Text Solution

    |

  18. Charges of magnitude (1)/(2),(2)/(3),(3)/(3) and (4)/(3) nanocolumb ar...

    Text Solution

    |

  19. Four small spheres carrying +(5)/(3),+(10)/(3),+(5)/(3) and -(5)/(3)nC...

    Text Solution

    |

  20. An electron is liberated from a hot filament and attracted by an anode...

    Text Solution

    |