The only property possessed by ferromagnetic substance is

Options

A. Susceplibility
B. Directional property
C. Hysteresis
D. Attracting magnetic substances

Answer

To solve the question regarding the only property possessed by ferromagnetic substances, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Ferromagnetic Substances**:
- Ferromagnetic substances are materials that exhibit strong magnetic properties. Common examples include iron (Fe), cobalt (Co), and nickel (Ni).

2. **Identify Key Properties**:
- The key characteristic of ferromagnetic materials is their ability to become magnetized and retain that magnetization even after the external magnetic field is removed.

3. **Introduce Hysteresis**:
- One of the most significant properties related to ferromagnetic materials is the hysteresis effect. This refers to the lag between the magnetization of the material and the applied magnetic field.

4. **Explain Hysteresis Loop**:
- The hysteresis loop (or BH curve) is a graphical representation of the relationship between magnetic flux density (B) and magnetic field strength (H).
- When a ferromagnetic material is magnetized, it follows a specific path on this graph, creating a loop. This loop indicates how the material responds to changes in the magnetic field.

5. **Identify the Correct Answer**:
- Given the context of the question, the only property that can be highlighted as unique to ferromagnetic substances is the hysteresis loop.

### Final Answer:
The only property possessed by ferromagnetic substances is **hysteresis**.

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