Question

Consider an infinite chain of point charges, ±q (with alternating signs), strung out along the x axis, each a distance 'a' from its nearest neighbors. Find the work per particle required to assemble this system. ​

Answer 1

Explanation:

Correct option is C)

Here the the interaction energy of first charge (q) with all the other charges is

U=U

12

+U

13

+U

14

+U

15