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The arc AB with the centre C and the infinitely long wire having linear charge density `lambda` are lying in the same place. The minimum amount of work to be done to move a point charge `q_(0)` from point A to B through a circuit path AB of radius a is equal to

A

`(q_(0) lambda)/(4pi epsi_(0)) ln (2/3)`

B

`(q_(0) lambda)/(2pi epsi_(0)) ln (3/2)`

C

`(q_(0) lambda)/(2pi epsi_(0)) ln (2/3)`

D

None of these

Text Solution

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The correct Answer is:
B
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