(a) The sliding bar in the figure has a length of 0.473 m and moves at 2.38 m/s in a magnetic field of magnitude 0.255 T. Using the concept of motional emf, find the induced voltage in the moving rod. V (b) If the resistance in the circuit is 0.395 N, find the current in the circuit and the power delivered to the resistor. (Note: The current, in this case, goes counterclockwise around the loop.) I = A P = W (c) Calculate the magnetic force on the bar. magnitude direction ---Select--- v (d) Use the concepts of work and power to calculate the applied force. N

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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(a) The sliding bar in the figure has a length of 0.473 m and moves at 2.38 m/s in a magnetic
field of magnitude 0.255 T. Using the concept of motional emf, find the induced voltage in the
moving rod.
V
(b) If the resistance in the circuit is 0.395 2, find the current in the circuit and the power
delivered to the resistor. (Note: The current, in this case, goes counterclockwise around the loop.)
I =
A
P =
W
(c) Calculate the magnetic force on the bar.
magnitude
direction
---Select--- v
(d) Use the concepts of work and power to calculate the applied force.
EXERCISE
HINTS:
GETTING STARTED
I'M STUCK!
Suppose the current suddenly increases to 1.40 A in the same direction as before, due to an increase in
speed of the bar. (Use the information from the PRACTICE IT part.)
(a) Find the emf induced in the rod.
V
=
new
(b) Find the new speed of the rod.
V.
new
m/s
Transcribed Image Text:(a) The sliding bar in the figure has a length of 0.473 m and moves at 2.38 m/s in a magnetic field of magnitude 0.255 T. Using the concept of motional emf, find the induced voltage in the moving rod. V (b) If the resistance in the circuit is 0.395 2, find the current in the circuit and the power delivered to the resistor. (Note: The current, in this case, goes counterclockwise around the loop.) I = A P = W (c) Calculate the magnetic force on the bar. magnitude direction ---Select--- v (d) Use the concepts of work and power to calculate the applied force. EXERCISE HINTS: GETTING STARTED I'M STUCK! Suppose the current suddenly increases to 1.40 A in the same direction as before, due to an increase in speed of the bar. (Use the information from the PRACTICE IT part.) (a) Find the emf induced in the rod. V = new (b) Find the new speed of the rod. V. new m/s
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