Physics-Ampere's Law

NEET Physics Ampere's Law MCQ Question

Type: MCQ-numerical-Easy-Class 12

For a long straight wire carrying a uniform current I, what is the magnetic field B at a distance r from the center of the wire, where r > a?

A

μ₀I / (2πr)

B

μ₀I / (4πr)

C

μ₀I / (2πa)

D

μ₀I / (πr)

Correct Answer

Option A

Detailed Explanation

Ampere's Law states that for a long straight wire with uniform current distribution, the magnetic field B at a distance r from the wire, where r > a, is given by B = μ₀I / (2πr).

Found an issue with this question?