Physics-Magnetic Properties of Materials
NEET Physics Magnetic Properties of Materials MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Consider a diagram showing a solenoid with a ferromagnetic rod placed inside it. The current is flowing through the solenoid. The magnetic field inside the solenoid is affected by the magnetisation of the rod. Which equation correctly represents the net magnetic field inside the solenoid?
A
B = B_0 + μ_0 M
B
B = B_0 - μ_0 M
C
B = μ_0 nI + M
D
B = μ_0 nI - M
Correct Answer
Option A
Detailed Explanation
The net magnetic field inside the solenoid is given by B = B_0 + B_m, where B_m = μ_0 M. This is derived from the relationship B = B_0 + μ_0 M as per the NCERT context.
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