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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:20. The figure shows a rod that is forced to move at constant speed v = 2.0 m/s along
the horizontal rails, which are separated by distance L = 10 cm. The rod, rails, and
connecting resistor at the left form a conducting loop. The entire apparatus is placed in
a uniform 0.80 T magnetic field pointing into the page. If the induced current through
the loop is 10 mA, what is the force applied to the rod? Assume no mechanical
resistance and all energy supplied by the force turns into heat in the loop.
(1) 220 μ.
(2) 4 mN
(3) 48 mN
YA
y
(4) 12 mN
X X X X X X X X
XIX X XIX X X XÃ
X X X X X X X
X X X
X X X X X X XV
L
X
X
X X X X X X X
X
(5) 0.8 m
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