1.

Three point charges q, q & - 2q placed, at the corners of equilateral triangle of side 'L ' Calculate work done by external force in moving all the charges far apart without acceleration

Answer»

`(1)/(4 PI epsilon_(0)) (3 q^(2))/(L)`
`-(1)/(4 pi epsilon_(0)) (3Q^(2))/(L)`
`(1)/(4 pi epsilon_(0)) (5q^(2))/(L)`
`- (1)/(4 pi epsilon_(0)) (5 q^(2))/(L)`

Answer :A


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