Physics · 2023
JEE Main · 24 January 2023, Shift 2 · Q11
The electric potential at the centre of two concentric half rings of radii R_1 and R_2, having same linear charge density λ is:
The electric potential at the centre of two concentric half rings of radii $\displaystyle R_1$ and $\displaystyle R_2$, having same linear charge density $\displaystyle \lambda$ is :

Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \frac{\lambda}{2 \epsilon_0}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.