The Question is from neet-physics magnetic-effects-current-and-magnetism types-of-magnetic-materials, and it was created by the author NAGA SAI

Question

Which of the following materials exhibits hysteresis?

NAGA SAI · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Hysteresis in magnetic materials
 **Related Topics**: Magnetism, magnetic domains, B-H curve
 **Prerequisites**: Understanding of magnetic materials and their behavior in magnetic fields.
## SOLUTION PATHWAY
**Given Information**:
The question asks which material exhibits hysteresis.
**Method & Steps**:
1. Understanding Hysteresis: Hysteresis is the phenomenon where the magnetization of a material lags behind the applied magnetic field.  This means that when the magnetic field is applied and then removed, the material doesn't return to its original magnetization state immediately.  Instead, there is a 'lag' or 'memory' effect.
  Reasoning: This lag is due to the rearrangement of magnetic domains within the material.  Different materials have different responses to this field change.
  Formula/Rule:  There's no single formula for hysteresis, but the B-H curve (magnetization vs. magnetic field strength) graphically represents the phenomenon. The area enclosed by the hysteresis loop represents the energy lost during a magnetization cycle.
2. Analyzing Material Types:
    Paramagnetic materials: These materials have a weak positive susceptibility to an external magnetic field. Their magnetization is directly proportional to the field strength and they don't exhibit significant hysteresis.
    Diamagnetic materials: These materials have a weak negative susceptibility. They also don't exhibit hysteresis.
    Ferromagnetic materials: These materials have a strong positive susceptibility and exhibit a significant hysteresis effect.  Their magnetic domains align strongly with the applied field, and they retain some magnetization even after the field is removed.
3. Conclusion: Only ferromagnetic materials exhibit significant hysteresis due to their domain structure and strong magnetic interactions.
  Result: Ferromagnetic materials exhibit hysteresis.
  Verification: Checking the definition of hysteresis and the behavior of each material type confirms the answer.
## OPTION ANALYSIS
A :x: Paramagnetic materials show negligible hysteresis.
B :x: Diamagnetic materials show negligible hysteresis.
C ✓: Ferromagnetic materials exhibit strong hysteresis due to domain wall motion and pinning.
D :x: Only ferromagnetic materials exhibit significant hysteresis.
## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing paramagnetism and ferromagnetism: Understanding the difference in the strength of magnetic response is crucial.
  2.Overlooking the domain structure: The domain structure is the key to understanding hysteresis in ferromagnetic materials.
 **Quick Tips**:
  1.Remember that hysteresis is a lagging effect in response to a changing magnetic field.
  2.Ferromagnetic materials (iron, nickel, cobalt) are the primary examples of materials exhibiting hysteresis.

NAGA SAI · Answer

Paramagnetic

NAGA SAI · Answer

Diamagnetic

NAGA SAI · Answer

The correct Option is "Ferromagnetic"

NAGA SAI · Answer

All of the above

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