NEET Physics Magnetic Properties of Materials MCQ Question
Imagine a diagram showing a solenoid with a ferromagnetic core, where the magnetic field inside is greater than B₀. Which process contributes to this increase in the magnetic field within the solenoid?
The alignment of magnetic domains within the core
The decrease in the number of turns per meter
The reduction of current flowing through the solenoid
The use of a non-magnetic material as the core
Correct Answer
Detailed Explanation
The increase in the magnetic field inside the solenoid is due to the magnetisation of the ferromagnetic core, which aligns the magnetic domains and enhances the field.
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