College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
Can you solve problem #33 in the picture below?

Transcribed Image Text:33. The homopolar generator, also called the Faraday disk, is a
M low-voltage, high-current electric generator. It consists
of a rotating conducting disk with one stationary brush
(a sliding electrical contact) at its axle and another at a
point on its circumference as shown in Figure P31.33.
A uniform magnetic field is applied perpendicular to
the plane of the disk. Assume the field is 0.900 T, the
angular speed is 3.20 X 103 rev/min, and the radius of
Figure P31.33

Transcribed Image Text:the disk is 0.400 m. Find the emf generated between
produce a large magnetic field, a homopolar generator
the brushes. When superconducting coils are used e
produce a large magnetic field, a homopolar generator
can have a power output of several megawatts. Such a
generator is useful, for example, in purifying metals be
electrolysis. If a voltage is applied to the output termi-
nals of the generator, it runs in reverse as a homopolar
motor capable of providing great torque, useful in ship
propulsion.
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