Question

In the working principle of a solenoid, how does each individual turn of the coil behave?

Options

• Each turn acts as a magnetic monopole producing radial field lines

• Each turn acts as a straight current-carrying wire with no axial field

• Each turn acts as an electric dipole producing an electrostatic field

• Each turn acts as a small current loop, producing a small magnetic field along the axis

Answer 1

Each turn of the solenoid acts as a small current loop, producing a small magnetic field along the axis. When many such turns are wound closely together, their individual fields superpose constructively along the axis, producing a strong, uniform field inside the solenoid.