Home
Class 12
PHYSICS
Two point charges -2muC and +3muC are ke...

Two point charges `-2muC` and `+3muC` are kept r distance apart. The `+3muC` charge is displaced such that the force of attraction between both the charges is now tripled. Calculate the final distance between both the charges.

Text Solution

Verified by Experts

`r/sqrt3`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Conceptual Questions|51 Videos

  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Tough & Tricky Problems|20 Videos

  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|15 Videos

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST FOR BOARD EXAMINATION|14 Videos

Similar Questions

Explore conceptually related problems

Two point charges + 4 muC and -2 muC are separated by a distance of 1 m in air. Calculate at what point on the line joining the two charges is the electric potential zero.

Two point charges of +1muC and +4muC are kept 30 cm apart. How far from the +1muC charge on the line joining the two charges, will the net electric field be zero?

Knowledge Check

  • The force of attractions between two charges 8muC and -4muC is 0.2 N. Find the distance of separation.

    A
    1.2 m
    B
    12 m
    C
    120 m
    D
    0.12 m

  • Two point charges +10 muC and +20 muC repel each other with a force of 100N. If a charge of-2 muC is added to each charge, then force between them will become

    A
    72N
    B
    7.2N
    C
    720N
    D
    100N

  • The force of repulsion between two point charges is F, when these are at distance 0.5m apart. Now the point charges are replaced by spheres of radii 5 cm each having the same charge as that of the respective point charge. The distance between their centres is again kept 0.5 m. Then the force of repulsion will

    A
    increase
    B
    decrease
    C
    remain F
    D
    become `(10 F)/9`

    • Similar Questions

    Explore conceptually related problems

    Two point charges +4muC and -10 muC are placed 10 cm apart in air. A dielectric slab of large length and breadth but of thickeness 5 cm is placed between them. Calculate the force of attraction between the charges, if the relative permittivity of dielectric is 9.

    Two point charges 10 muC and -10 muC are separated by a distance of 40 cm in air. Draw an equipotential surface of the system.

    Two point charges , -2muC and +6muC are fixed on a table at a distance 10 cm from each other. Where should the third charge be placed so that no net force acts on it ?

    Two balls with charges 5muC" and "10muC are at a distance between them to 0.5 m, the amount of work to be performed is

    Two point charges +3 muC and +8muC repel each other with a force of 40 N . If a charge of -5 muC is added to each of them, then the force between them will become

    Home
    Profile