Question

What happens to the iron when an iron rod is inserted into the interior of an inductor connected to an AC source?

Options

• The magnetic field inside the coil magnetises the iron.

• The iron prevents a magnetic field inside the coil.

• The iron reduces the magnetic field inside the coil.

• The capacitive reactance magnetises the iron.

Answer 1

The magnetic field inside the coil magnetises the inserted iron. This increases the magnetic field inside the coil.