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Two identical thin ring, each of radius ...

Two identical thin ring, each of radius R meters, are coaxially placed a distance R metres apart. If `Q_1` coulomb, and `Q_2` coulomb, are repectively the charges uniformly spread on the two rings, the work done in moving a charge q from the centre of one ring to that of the other is

A

zero

B

`(Gm(m_(1) - m_(2))(sqrt(2) - 1))/(sqrt(2)R)`

C

`(Gmsqrt(2)(m_(1) + m_(2)))/(R)`

D

`(Gmm_(1)(sqrt(2)-1))/(m_(2)R)`

Text Solution

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The correct Answer is:
B
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