Abstract
This chapter discusses the electric field and electromagnetics. Electric fields are created by charges; that is, charges are the source of electric fields. Charges come in two types, positive (+) and negative (-). Like charges repel each other and opposites attract. In other words, charges produce a force that either pushes or pulls other charges away. Neutral objects are not affected. The force between two charges is proportional to the product of the two charges, and is called Coulomb's law. By convention, the electric field is always drawn from positive to negative. Therefore, the force lines emanate from a positive charge and converge to a negative charge. Furthermore, the electric field is a normalized force, a force per charge. The normalization allows the field values to be specified independent of a second charge. Thus, the value of an electric field at any point in space specifies the force that would be felt if a unit of charge were to be placed there.
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