An electromagnet is a magnet whose magnetism arises due to

Options

A. Flow of electric current
B. Movement of magnet
C. nature of material
D. none of these

Answer

To answer the question, "An electromagnet is a magnet whose magnetism arises due to:", we need to analyze the options provided and understand the concept of electromagnetism.

### Step-by-Step Solution:

1. **Understanding Electromagnetism**: An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. This is the fundamental principle behind electromagnets.

2. **Analyzing the Options**:
- **Option 1: Flow of electric current**: This is the correct answer. When electric current flows through a conductor, it generates a magnetic field around it. This is the principle behind electromagnets.
- **Option 2: Movement of magnet**: This is incorrect. While moving a magnet can induce current in a conductor (as per Faraday's law of electromagnetic induction), it does not define how an electromagnet works.
- **Option 3: Nature of material**: This is also incorrect. While the material can affect the strength of the electromagnet, the magnetism itself arises from the flow of current.
- **Option 4: None of these**: This is incorrect as well since option 1 is indeed correct.

3. **Conclusion**: Based on the analysis, the correct answer is **Option 1: Flow of electric current**. The magnetism in an electromagnet arises specifically due to the flow of electric current through a coil or conductor.

### Final Answer:
An electromagnet is a magnet whose magnetism arises due to **the flow of electric current**.

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