ELECTROMAGNETISM – PART – 05 – COMPARSION BETWEEN ELECTRIC AND MAGNETIC CIRCUITS

SOLENOID

Solenoid is a Greek work meaning ‘tube like’. A long coil of wire consisting of closely packed loops is called solenoid.

The length of the solenoid is very large as compared to its diameter.

FUNCTION OF AIRGAP

1. To prevent magnetic saturation of the magnetic circuit.

2. To allow an object to move in the magnetic field.

KIRCHHOFF’S LAWS

The sum of the fluxes entering a junction in a magnetic circuit is equal to the sum of the fluxes leaving the junction (KCL).

In a closed path of a magnetic circuit, the algebraic sum of MMFs required to force the flux through the elements must be equal to the net ampere turns of excitation (KVL).

SERIES MAGNETIC CIRCUIT

In a series magnetic circuit, the same flux flows through each part of the circuit.

PARALLEL CIRCUIT

A magnetic circuit which has more than one path for flux is called a parallel magnetic circuit.