Question Detail

PHY 102 Gauss's Law and Electrostatic Fields Objective Question
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Question

What is the electric field at a distance r from an infinitely long line charge with linear charge density λ?
Options
A E = λ/(2πε₀r)
Correct Answer
B E = λ/(4πε₀r²)
C E = λ/(πε₀r)
D E = λ/(2πr)
Correct Answer

Option A is the correct answer.

Detailed Explanation

Using a cylindrical Gaussian surface, Gauss's law gives E = λ/(2πε₀r).

Hint

Cylindrical symmetry → 1/r dependence.

Question Info

Course: PHY 102
Topic: Gauss's Law and Electrostatic Fields
Type: Objective
Difficulty: Not specified
Question 72 of 1819
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