Question

When is an emf induced in the neighbouring coil?

Options

• Whenever the magnetic flux linked with a coil changes

• Only when the secondary coil has no load

• Whenever the magnetic flux linked with a coil remains constant

• Only when the soft iron core has flux leakage

Answer 1

Mutual induction requires a change in the magnetic flux linked with a coil. That change induces an emf in the neighbouring coil.