Physics · Electrostatics
The electric field E at a distance r from an infinitely long line charge placed along the z-axis with line charge density ρL is given by which of the following expressions? (Note: here aρ and az are unit vectors in the radial direction and z direction, respectively.)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1E = (ρL2πε0r) az
- 2E = (ρLr2πε0) az
- 3E = (ρL2πε0r) aρ✓
- 4E = (ρL4πε0r2) aρ
Correct answer
E = (ρL2πε0r) aρ
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