Introduction to Magnetic Circuits

UNIT – I

Chapter - 1

Magnetic Circuits and Electromagnetism

Introduction to Magnetic Circuits

• All of us are familiar with a magnet. It is a piece of solid body which possesses a property of attracting iron pieces and pieces of some other metals. This is called a natural magnet. While as per the discovery of Scientist Oersted we can have an electromagnet. Scientist Oersted stated that any current carrying conductor is always surrounded by a magnetic field. The property of such current is called magnetic effect of an electric current. Natural magnet or an electromagnet, both have close relation with electromotive force (e.m.f.), mechanical force experienced by conductor, electric current etc. To understand this relationship it is necessary to study the fundamental concepts of magnetic circuits.