Home
Class 12
PHYSICS
The ratio of the force between two charg...

The ratio of the force between two charges in air and that in a medium of dielectric constant K is

A

K : 1

B

1 : K

C

`k^(2)`: 1

D

` 1 : K^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED ( II. FILL IN THE BLANKS)|34 Videos

  • ELECTROSTATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED ( III. MATCH THE FOLLOWING :)|4 Videos

  • ELECTROSTATICS

    FULL MARKS|Exercise EXERCISES|15 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    FULL MARKS|Exercise ADDITIONAL QUESTIONS -( ADDITIONAL NUMERICAL PROBLEMS : )|10 Videos

  • MAGNETISM AND MAGNETIC EFFECTS OF ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED - NUMERICAL PROBLEMS :|4 Videos

Similar Questions

Explore conceptually related problems

The force between two charges at a perticular distance in air is 36 N. if the distance between the charges is filled by a medium of dielectric constant 6, then the force is ______

Two charges are placed in vacuum at a distance d apart. The force between them is F. if a medium of dielectric constant 2 is introduced between them, the force will now be

Force between the charges is given by the equation :

Figure shown a parallel-plate capacitor having square plates of edge a and plate-separation d. The gap between the plates is filled with a dielectric of dielectric constant K which varies parallel to an edge as where K and a are constants and x is the distance from the left end. Calculate the capacitance.

The law that governs the force between electric charges is :

A sphercial capacitor is made of two conducting spherical shells of radii a and b.The space between the shells is filled with a dielectric constant K up to a radius c as shown in figure. Calculate the capacitance .

The electrostatic force between two point charges kept at a distance d apart , in a medium varepsilon_r =6 is 0.3 N . The force between them at the same separation in vacuum is

Two insulated copper sphere of charges +10 mu C and -20 mu C have their centres seprated by a distance of 10 cm . What is the force of attraction if they placed. a in free space b. in water of dielectric constant 81.

A parallel plate capacitor has plate area A and plate separation d. The space between the plates is filled up to a thickness x (ltd) with a dielectric constant K. Calculate the capacitance of the system.

FULL MARKS-ELECTROSTATICS -ADDITIONAL QUESTIONS SOLVED ( Multiple choice questions : )
  1. The electric field intensity at a point 20 cm away from a charge of 2 ...

    Text Solution

    |

  2. How many electrons will have a charge of one coulomb ?

    Text Solution

    |

  3. The ratio of the force between two charges in air and that in a medium...

    Text Solution

    |

  4. The workdone in moving a positve charge on an equipotenial surface is

    Text Solution

    |

  5. If a charge is moved against the coulomb force of an electric field.

    Text Solution

    |

  6. No current flows between two charged particles when connected if the...

    Text Solution

    |

  7. Electric field lines about a negative point charge are

    Text Solution

    |

  8. Two plates are 1 cm aprt and the potential difference between them is ...

    Text Solution

    |

  9. At a large distance (r), the electric field due to a dipole varies as

    Text Solution

    |

  10. Two thin infinite parallel plates have uniform charge densities + sigm...

    Text Solution

    |

  11. Two isolated, charged coducting spheres of radii R(1) and R(2) produce...

    Text Solution

    |

  12. A 100 muF capacitor is to have an energy content of 50 J in order to o...

    Text Solution

    |

  13. A 1 muF capacitor is placed n parallel with a 2 mu F capacitor across...

    Text Solution

    |

  14. A parallel plate capacitor of capacitance 100 mu F Is charged to 500 V...

    Text Solution

    |

  15. A point charge q is placed at the midpoint of a cube of side L. The el...

    Text Solution

    |

  16. The capacitor C of a spherical conductor of radius R is proportional t...

    Text Solution

    |

  17. Energy of a capacitor of capacitance C, when subjected to a pontential...

    Text Solution

    |

  18. The electric field due to a dipole at a distnce r from its centre is p...

    Text Solution

    |

  19. The work done in carrying a charge 'a' once round a circle of radius '...

    Text Solution

    |

  20. The workdone in rotating an electric dipole of moment P in an electric...

    Text Solution

    |