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प्रश्न
Two charges of equal magnitudes kept at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is ______.
पर्याय
`"F"/8`
`"F"/4`
4F
`"F"/16`
MCQ
रिकाम्या जागा भरा
उत्तर
Two charges of equal magnitudes kept at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is `underline("F"/16)`.
Explanation:
F = `("k"*"Q"^2)/"r"^2`.
If Q is halved, r is doubled then F = `1/16` times.
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