Physics-Magnetic Properties of Materials
NEET Physics Magnetic Properties of Materials MCQ Question
Type: MCQ-diagram based-Easy-Class 12
Consider a solenoid with a core of material having relative permeability 400. The solenoid carries a current of 2 A with 1000 turns per meter. Which of the following represents the expression for the magnetisation M of the material inside the solenoid?
A
M = (μ_r - 1)H
B
M = B / μ_0
C
M = μ_0 H
D
M = B / (μ_r μ_0)
Correct Answer
Option A
Detailed Explanation
Magnetisation M is given by the expression M = (B - μ_0 H) / μ_0, which simplifies to M = (μ_r - 1)H, as per the NCERT context provided.
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