Questions
Two point charges are kept at a separation , magnitude of electric force experienced by each charge is F. If the separation between the charges is halved, electro static potential energy stored in the system is
detailed solution
Correct option is C
F=KQ1Q2r2 and U=KQ1Q2r/2=2rKQ1Q2r2=2 rFTalk to our academic expert!
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Four equal charges Q are placed at the four comers of a square of each side is 'a'. Work done in removing a charge -Q from its centre to infinity is
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