Question

There are two concentric half ring of radius R₁ and R₂ having linear charge density λ on each. Find potential at their common centre.

(1) \(\frac{\lambda}{\epsilon_0}\)

(2) \(\frac{\lambda}{4\epsilon_0}\)

(3) \(\frac{\lambda}{2\epsilon_0}\)

(4) \(\frac{4\lambda}{\epsilon_0}\)

Answer 1

Correct option is (3) \(\frac{\lambda}{2\epsilon_0}\)