Q. Charge $q$ is uniformly distributed over a thin half ring of radius $R.$ The electric field at the centre of the ring is
A) $\frac{q}{2\pi^{2}\varepsilon_{0}R^{2}}$
B) $\frac{q}{4\pi^{2}\varepsilon_{0}R^{2}}$
C) $\frac{q}{4\pi\varepsilon_{0}R^{2}}$
D) $\frac{q}{2\pi\varepsilon_{0}R^{2}}$
Explanation
The correct answer is Option A: $\frac{q}{2\pi^{2}\varepsilon_{0}R^{2}}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.