Chapter 36, Problem 33A

Why will the magnetic field strength be further increased inside a current-carrying coil if a piece of iron is placed in the coil?

To determine

To explain: Piece of iron increases the magnetic field of a current carrying coil.

Explanation of Solution

Introduction:

All substances have magnetic permeability and the magnetic permeability of iron is greater than that of the air. So, the circuit will have more magnetism in it for the same coil current by putting the iron in the magnetic circuit.

The piece of iron increases the magnetic field of a current carrying coil because the magnetic domain’s alignment adds to the strength of the magnetic field. The magnetic field strength is increased due to placing the iron piece inside thecurrent carrying coil and so, the iron core gets magnetized due to the induction process.

Conclusion:

The iron core gets magnetized due to the process of induction when it is placed inside the current carrying coil.