Name the material used to make core of electromagnets.

Explanation

**Step-by-Step Solution:**

1. **Understanding Electromagnets**: Electromagnets are a type of magnet where the magnetic field is produced by an electric current. They are classified as temporary magnets because they only exhibit magnetic properties when an electric current flows through them.

2. **Identifying the Core Material**: The core of an electromagnet is crucial for its functionality. It enhances the magnetic field generated by the electric current.

3. **Material Used**: The most commonly used material for the core of electromagnets is **soft iron**. Soft iron is a ferromagnetic substance, meaning it can be magnetized easily and loses its magnetism quickly when the current is turned off.

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