Q. Two parallel infinite line charges $+ \lambda$ and $–\lambda$ are placed with a separation distance $R$ in free space. The net electric field exactly mid-way between the two line charges is
A) Zero
B) $\frac{2\lambda}{\pi\varepsilon_{0}R}$
C) $\frac{\lambda}{\pi\varepsilon_{0}R}$
D) $\frac{\lambda}{2\pi\varepsilon_{0}R}$
Explanation
The correct answer is Option B: $\frac{2\lambda}{\pi\varepsilon_{0}R}$.
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.