Two identical thin rings, each of radius...

Two identical thin rings, each of radius 10 cm carrying charges 10 C and 5 C are coaxially placed at a distance 10 cm apart. The work done in moving a charge q from the centre of the first ring to that of the second is

A

a. `(q)/((sqrt2+1)/sqrt2)`

B

b. `(q)/(8 pi epsi_(0)) ((sqrt2-1)/(sqrt2))`

C

c. `(q)/(4piepsi_(0)) ((sqrt2+1)/(sqrt2))`

D

d. `(q)/(4pi epsi_(0)) ((sqrt2-1)/(sqrt2))`

Text Solution

Verified by Experts

The correct Answer is:

B

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