1.

Consider two small balls carrying equal and opposite charges. If one is secured and other is related it can do work W_(1) against the repulsive force (as it moves away). If before the second ball is released, they are connected by a conductor for some time, the second ball can do work W_(2) while moving away. The heat liberated in the conductor when the balls are connected, the energy at the expense ofwhich heat is liberated and mechanical work changed is

Answer»

`((q_(1)+q_(2))^(2))/4(1/R-1/L)`
`((q_(1)+q_(2)))/2(1/r-1/L)`
`((q_(1)+q_(2))^(2))/4(1/(r^(2))-1/(L^(2)))`
`((q_(1)+q_(2))^(2))/4(1/r-1/L)`

ANSWER :A


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