Home
Class 12
PHYSICS
Two similar very small conducting sphere...

Two similar very small conducting spheres having vharges `40 muC` and `-20 muC` are some distance apart. Now they are touched and kept at the same distance. The ratio of the initial to the final force between them is :

A

`8 :1`

B

`4:1`

C

`1:8`

D

`1:1`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    MOTION|Exercise Exercise - 2 (Objective Problems | NEET)|64 Videos

  • ELECTROSTATICS

    MOTION|Exercise Exercise -3 Section (A)|41 Videos

  • ELECTROSTATICS

    MOTION|Exercise SELF PRACTICE PROBLEM|27 Videos

  • ELECTRONICS - SEMI CONDUCTOR

    MOTION|Exercise EXERCISE - 3|29 Videos

  • ELECTROSTATICS - I

    MOTION|Exercise EXERCISE - 4 (Level -II) PREVIOUS YEAR - JEE ADVANCED|13 Videos

Similar Questions

Explore conceptually related problems

Two identical bodies in which charges are 40muC and -20muC . They are some distance apart. Now they are touched and kept at the same distance. The ratio of the initial to the final force between them is

If two identical spheres having charge 16muC and -8mu C are kept at certain distance apart, then the force is F. They are touched and again kept at the same distance, the force becomes

If two identical spheres having charge 16 mu C and -8 mu C are kept at certain distance apart , then the force if F. They are touched and again kept at the same distance , the force becomes.

Two small identical spheres having charges +10 muC and - 90muC attract each other with a force of F newton . If they are kept in contant and then separated by the same distance, the new force between them is -

An attractive force of 5 N is acting between two charges of + 2muC and - 2 mu C placed at some distance. If the charges are mutually touched and placed again at the same distance , what will be the new force, between them ?

Two small conducting spheres have charges 2.1 nC and -0.1 nC are touched to each other and then separated by a distance of 0.5 m. Find the force between them

Two identical small conducting spheres having unequal positive charges q_1 and q_2 are separated by a distance r. If they are now made to touch each other and then separated again to the same edistance, the electrostatic formce between them in this case will be

MOTION-ELECTROSTATICS-Exercise -1 (Objective Problems | NEET)
  1. A cylinder of radius R and length l is placed in a uniform electric fi...

    Text Solution

    |

  2. A surface enclosed an electric dipole, the flux through the surface is...

    Text Solution

    |

  3. A square of side 20cm. Is enclosed by a surface of sphere of 80 cm. ra...

    Text Solution

    |

  4. A charge q is located at the centre of a cube. The electric flux throu...

    Text Solution

    |

  5. The volume charge density as a function of distance X from one face in...

    Text Solution

    |

  6. A hollow sphere of charge does not produce an electric field at any-

    Text Solution

    |

  7. Calculate the earth's potential. Assume earth has a surface charge den...

    Text Solution

    |

  8. The electric field inside a spherical shell of uniform surface charge ...

    Text Solution

    |

  9. A hollow metal sphere of radius 5 cm is charged so that the potential ...

    Text Solution

    |

  10. A charged spherical conductor of radius R carries a charge Q. a point ...

    Text Solution

    |

  11. The electric field intensity at a point located at distance r(r lt R) ...

    Text Solution

    |

  12. The dependence of electric potential V on the distance 'r' from the ce...

    Text Solution

    |

  13. Potential difference beween centre and surface of the sphere of radius...

    Text Solution

    |

  14. A solid sphere of radius R has charge q uniformly distributed over its...

    Text Solution

    |

  15. Two similar very small conducting spheres having vharges 40 muC and -2...

    Text Solution

    |

  16. Three concentric conducting spherical shells carry charges as : +4Q on...

    Text Solution

    |

  17. A solid metallic sphere has a charge +3Q. Concentric with this sphere ...

    Text Solution

    |

  18. Shown in the figure a spherical shell with an inner radius 'a' and an ...

    Text Solution

    |

  19. In the previous question assume that the electrostatic potential is ze...

    Text Solution

    |

  20. A positive charge q is placed in a spherical cavity made in a positive...

    Text Solution

    |