Question

Two coils A and B is provided to you whereas coil A has 30 turns and coil B has 50

turns. Which coil will exhibit more magnetic field. Why?​

Answer 1

When two circular coils A and B are placed close to each other, and the current in the coil A is changed then some current will be induced in the coil B and the magnetic field associated with it also changes. Thus the magnetic field around coil B also changes. This change in the magnetic field lines around coil B induces an electric current in it. This process is known as electromagnetic induction.