Which of the following is characteristic of soft magnetic materials?

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RRB JE EE 22 Apr 2025 Shift 1 CBT 2 Official Paper

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Answer 1

Explanation

Soft magnetic materials are designed to magnetize and demagnetize easily, hence have a small value of coercivity.
Hard magnetic materials are used where permanent magnetism is required.

Difference between hard and soft magnetic material:

Hard magnetic material	Soft magnetic material
Hard magnetic materials are those types of magnetic materials that maintain a constant magnetic property after magnetization.	A type of magnetic material that can be easily magnetized and demagnetized is known as a soft magnetic material.
The area of the hysteresis loop for hard magnetic materials is large, consequently, these materials have large hysteresis loss.	The area of the hysteresis loop of the soft magnetic materials is small.
Materials like iron, nickel, and cobalt are common examples of hard magnets.	An electromagnet is an example of a soft magnet.
Hard magnetic materials have a large value of retentivity and coercivity	Soft magnetic materials have a small value of retentivity and coercivity.