Contents

Electromagnetic Theory
Vector Analysis
Electrostatics
Magnetostatics
Maxwell Equations
Wave Propagation
Transmission Lines
Antennas
Other Topics
Other Subjects
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3 of 15 articles

Electric Field of Line Charge

Infinite line charge, E = rho_L/(2*pi*epsilon*r).

Darshan N
Updated: 19 March 2026
5 min read

Line Charge Field

Test your grasp of electric field derivations for infinite line charge distributions.

Question 1 of 3

Q1.An infinite line charge with linear charge density ρL = 20 nC/m exists along the z-axis. What is the electric field intensity at a radial distance r = 2 m in free space?