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Two point charges are separated by some ...

Two point charges are separated by some distance, repel each other with a force F. What will be the force if distance between them is halved?

Text Solution

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`F=1/(4piepsilon_0)(q_1q_2)/r^2`
When `r=r/2`
`F.=1/(4piepsilon_0) (q_1q_2)/((r/2)^2)=4 1/(4piepsilon_0) (q_1q_2)/r^2=4F`
New force F.=4F
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Knowledge Check

  • A system of two charges separated by a certain distance apart stores electrical potential energy. If the distance between them is increased, the potential energy of the system,

    A
    may increase or decrease
    B
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    C
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    A
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    B
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    C
    `sqrt((4piepsilon_(0)Fe^(2))/(d^(2)))`
    D
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