Physics-Magnetic Properties of Materials
NEET Physics Magnetic Properties of Materials MCQ Question
Type: MCQ-numerical-Hard-Class 12
A solenoid has a core made of a material with a relative permeability of 500. The current through the solenoid is 3 A, and the number of turns is 2000 per meter. Calculate the magnetisation M of the core.
A
1.2 x 10^6 A/m
B
5.97 x 10^5 A/m
C
4.8 x 10^5 A/m
D
3.0 x 10^6 A/m
Correct Answer
Option A
Detailed Explanation
Using M = (μ_r - 1)H, where H = nI = 2000 x 3 = 6000 A/m, M = (500 - 1) x 6000 = 1.2 x 10^6 A/m.
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