Three point charge -q, +q and -q are placed along straight line at equal distances (say r meter). Electric potential energy of this system of charges will be if +q charge is in the middle.
−3q24πε0r
−8q23πε0r
−3q28πε0r
−q28πε0r
A
−3q24πε0r
B
−8q23πε0r
C
−3q28πε0r
D
−q28πε0r
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Solution
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Point charge =−q, +q, −q
radius =r
Electric potential of this system
V=14πϵ0.−q22r
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