3. A rod of mass M and length L can slide without friction on two parallel rails as shown in the figure. There is a uniform magnetic field B directed out of the plane. The rails have negligible resistance but the rod has resistance R. Initially the rod is at rest, but at time t = 0 the switch is closed connecting the rod to a battery of Ɛ volts.

College Physics
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ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
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Chapter19: Magnetism
Section: Chapter Questions
Problem 32P: A metal rod of mass m carrying a current I glides on two horizontal rails a distance d apart. If the...
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3. A rod of mass M and length L can slide without friction on two parallel rails as shown in the figure. There is a
uniform magnetic field B directed out of the plane. The rails have negligible resistance but the rod has resistance R.
Initially the rod is at rest, but at time t = 0 the switch is closed connecting the rod to a battery of Ɛ volts.
(b) ts.) Find the current in the
system if the rod is moving right with
speed v.
Transcribed Image Text:3. A rod of mass M and length L can slide without friction on two parallel rails as shown in the figure. There is a uniform magnetic field B directed out of the plane. The rails have negligible resistance but the rod has resistance R. Initially the rod is at rest, but at time t = 0 the switch is closed connecting the rod to a battery of Ɛ volts. (b) ts.) Find the current in the system if the rod is moving right with speed v.
B
v(t) =?
R
Transcribed Image Text:B v(t) =? R
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