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Two insulated charged copper spheres A a...

Two insulated charged copper spheres A and B have their centres separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is `6.5 xx 10^(-2)C? ` The radii of A and B are negligible compared to the distance of separation.
b. What is the force of repulsion if each sphere is charged double the above amount and the distance between them is halved?

Text Solution

Verified by Experts

(a) `1.5 xx10^(2)` N
(b) 0.24 N
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Knowledge Check

  • If the distance between two charges is doubled the electrostatic force between the charges will be

    A
    four times more
    B
    four times less
    C
    two times more
    D
    two times less

  • Two charges +4 C and +1 C are separated by a distance of 3 m. To keep these charges in equilibrium , a third charge is to be placed at

    A
    A.2.5 from the charge 1C
    B
    B.1.5 from the charge 4C
    C
    C.2 m from the charge 4 C
    D
    D.2 m from the charge 1 C

  • The repulsive force between two like charges of 1 coulomb each separated by a distance of 1 m in vacuum is equal to

    A
    `9xx10^(9)N`
    B
    `10^(9)N`
    C
    `9xx10^(-9)N`
    D
    9N

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