ENG 1450 Study Guide - Final Guide: Electrocardiography, Electric Light, Radio Receiver
13 Dec 2018
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Fundamentals: the basic quantity of interest in electrical engineering is electric charge. The charge itself is measured in the units of. Coulombs (c) with the smallest unit of charge being the proton (1. 6 x 10-19c) and the electron (-1. 6 x 10-19c): from the conservation of energy law (first law of thermodynamics), electric charge is always conserved in any interaction. Thus charge is never created or destroyed: the most basic concepts to be considered revolve around the forces produced by, and the subsequent movement of electrical charges, voltage: in mechanical systems work is defined as force x. In electrical terms, the work required, per unit charge, to move the charge from point a to point b, is referred to as the voltage between the two points. Voltage is the difference in potential energy between two points. The voltage at a given point b relative to point a is defined as:
