College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Transcribed Image Text:Ex.1 A 100-loop square coil of wire, with side L=5 cm. and total resistance R=100 Ohm is positioned perpendicular to a
uniform magnetic field B=0.6 T. as shown in Figure. below. It is quickly pulled from the field at constant speed (moving
perpendicular to ) to a region where B drops abruptly to zero. At the right edge of the coil is at the edge of the field. It takes
0.100s for the whole coil to reach the field-free region. Determine (a) the rate of change in flux through one loop of the coil,
and (b) the total emf and current induced in the 100-loop coil. (c) How much energy is dissipated in the coil? (d) What was the
average force required( APPROACH We start by finding how the magnetic flux, changes during the time interval Faraday's law
then gives the induced emf and Ohm's law gives the current.)
B-0.600 T
X X
B=0
ext
X X
x x:
xx x x x x × ×
-5.00 cm
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