Induction furnace makes use of

Options

A. self-induction
B. mutual induction
C. eddy currents
D. magnetic flux

Answer

**Step-by-Step Solution:**

1. **Understanding the Induction Furnace:**
- An induction furnace is a type of electric furnace that uses electromagnetic induction to heat and melt metals. It operates on the principle of inducing electric currents in a conductive material.

2. **Principle of Eddy Currents:**
- Eddy currents are loops of electric current that are induced within conductors by a changing magnetic field. When a conductor is exposed to a magnetic field that changes over time, it experiences a force that causes the free electrons in the material to move, creating these currents.

3. **Role of Eddy Currents in Induction Furnace:**
- In an induction furnace, a coil carrying alternating current generates a changing magnetic field. This field penetrates the metal placed inside the furnace, inducing eddy currents in it.

4. **Heating Effect:**
- The induced eddy currents flow through the resistance of the metal, generating heat due to electrical resistance (Joule heating). The heat produced is sufficient to melt the metal, allowing for various metallurgical processes.

5. **Conclusion:**
- Therefore, the induction furnace primarily makes use of eddy currents to generate heat for melting metals.

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