Questions
Two identical charge particles having charge q and mass m are placed ‘L’ distance apart. If one charge is fixed and other free to move. Find its speed when distance between them becomes 2L.( )
detailed solution
Correct option is B
Intial PE=q24π∈0LFinal PE=q24π∈02LΔKE=12mv2=q24π∈0 L1−12v=2q24πε0Lm12v=Kq2LmTalk to our academic expert!
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