CHAPTER 19 : ELECTROSTATICS
INTRODUCTION TO ELECTRICITY AND MAGNETISM
The science of Electricity and Magnetism had its beginnings in the Greek Civilization. The
characteristics of attraction between a Silk cloth (rubbed with glass rod) and amber rods (rubbed with cat's fur) and
the repulsion between glass rods, each of which was rubbed with a silk cloth and the property of load
stones to point in North-South directions were known to the Greeks.
In this course, we begin from where the Greeks left to give
a brief account of Maxwell's Synthesis of Electro-magnetism in the
middle of the last century.
Two types of Electric charges, called positive and negative,
are known to exist. The fact that like charges repel and the unlike
charges attract is also familiar. The quantitative aspects of the
attraction and repulsion are embodied in Coulomb's law based on