NEET2019Physics-Electrostatics
NEET 2019 Physics Electric Field MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Two parallel infinite line charges with linear charge densities +λ C/m and −λ C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?
A
λ/πϵ₀R N/C
B
λ/2πϵ₀R N/C
C
zero
D
2λ/πϵ₀R N/C
Correct Answer
Option A
Detailed Explanation
The electric fields due to each line charge at the midpoint will be equal in magnitude but opposite in direction, thus canceling each other out, resulting in a net electric field of zero.
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