A bar is moved along conducting rails at a constant 2.0 m/s in the presence of a 1-tesla magnetic field into the page, as shown. A 4-ohm resistor is connected into the circuit.a) What current flows in the loop?b) What force is required to maintain the constant 2 mis velocity?c) How much work must be done by this force in 1 second?d) Calculate the power dissipated by the resistor and compare the energy dissipated by the resistor with the work done in this same time. *** 28. A bar is moved along conducting rails at a constant 2.0 m/s in the presence of a l-teslamagnetic field into the page, as shown. A 4-ohm resistor is connected into the circuit.(8)(X)1 T2 m/s0.1 ma) What current flows in the loop?b) What force is required to maintain the constant 2 m/s velocity?c) How much work must be done by this force in 1 second?d) Calculate the power dissipated by the resistor and compare the energy dissipated bythe resistor with the work done in this same time.+

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University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 106CP: A copper rod of mass in and length L is hung from the ceiling using two springs of spring constant...

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A bar is moved along conducting rails at a constant 2.0 m/s in the presence of a 1-tesla magnetic field into the page, as shown. A 4-ohm resistor is connected into the circuit.

a) What current flows in the loop?

b) What force is required to maintain the constant 2 mis velocity?

c) How much work must be done by this force in 1 second?

d) Calculate the power dissipated by the resistor and compare the energy dissipated by the resistor with the work done in this same time.

*** 28. A bar is moved along conducting rails at a constant 2.0 m/s in the presence of a l-tesla
magnetic field into the page, as shown. A 4-ohm resistor is connected into the circuit.
(8)
(X)
1 T
2 m/s
0.1 m
a) What current flows in the loop?
b) What force is required to maintain the constant 2 m/s velocity?
c) How much work must be done by this force in 1 second?
d) Calculate the power dissipated by the resistor and compare the energy dissipated by
the resistor with the work done in this same time.
+

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