Electric Circuit
In electrical engineering, we are often interested in communicating or transferring energy from one point to another. To do this requires an interconnection of electrical devices. Such interconnection is referred to as an electric circuit, and each component of the circuit is known as an element.
An electric circuit is an interconnection of electrical elements. [26, p4]
A simple electric circuit consists of three basic elements: a battery, a lamp, and connecting wires.
a) Charge is an electrical property of the atomic particles of which matter consists, measured in coulombs (C).
b) Electric current is the time rate of change of charge, measured in amperes (A).
A direct current (dc) is a current that remains constant with time.
An alternating current (ac) is a current that varies sinusoidally with time.
Charles Alexander and Matthew Sadiku (2004). "Fundamentals of Electric Circuits". McGraw-Hill. p4.
Charles Alexander and Matthew Sadiku (2004). "Fundamentals of Electric Circuits". McGraw-Hill. p6.
Charles Alexander and Matthew Sadiku (2004). "Fundamentals of Electric Circuits". McGraw-Hill. p7.