Electric Current The voltage V in a typical 115-volt outlet can be expressed by the
Chapter 5, Problem 75(choose chapter or problem)
Electric Current The voltage V in a typical 115-volt outlet can be expressed by the function V1t2 = 163 sin 120pt, where 120p is the angular speed (in radians per second) of the rotating generator at an electrical power plant, and t is time in seconds. (Source: Bell, D., Fundamentals of Electric Circuits, Fourth Edition, Prentice-Hall.) (a) How many times does the current oscillate in 0.05 sec? (b) What are the maximum and minimum voltages in this outlet? (c) Is the voltage always equal to 115 volts?
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