CHAPTER 2
STATIC ELECTRIC FIELDS
2.1 INTRODUCTION
The electrostatic field theory is the study of time-invariant fields established by charges at rest. Electrostatics corresponds to stationary charges i.e., charges are at rest, which means an electrostatic field is produced by a static charge distribution. The source of electric field is electric charge or charge density. A charge can be either concentrated at a point or distributed in any manner. In any case, the charge is assumed to be constant in time and hence, the field produced by the charge will be time-invariant. Therefore, this electrostatic field is also called a time-invariant field.
Electrostatics has diverse areas of applications, and many electronic devices and systems are based ...
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