CHEM 305 Lecture Notes - Lecture 3: Rectifier, Electric Field, Overcurrent
30 Jun 2020
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Document Summary
Basic eletrical terminology: alternating current (ac) an electric current that reverses its direction many times a second at regular intervals, ammeter an instrument for measuring the flow of electrical current in amperes. It is obtained by multiplying the current (in amperes) by the time (in hours) during which current flows. For example, a battery which provides 5 amperes for 20 hours is said to deliver 100 ampere - hours: ampere (a) a unit of measure for the intensity of an electric current flowing in a circuit. One ampere is equal to a current flow of one coulomb per second: apparent power measured in volt-ampers (va). Apparent power is the product of the rms voltage and the rms current: armature the movable part of a generator or motor. It is made up of conductors which rotate through a magnetic field to provide voltage or force by electromagnetic induction.
