http://capa-new.colorado.edu/teacher/capalibrary/Graphics/Gtype64/prob08a.gif An
ID: 1353315 • Letter: H
Question
http://capa-new.colorado.edu/teacher/capalibrary/Graphics/Gtype64/prob08a.gif
Answer the following questions with regard to the diagram above. If the first is T and the rest F, enter TFFFF.
A) In the absence of friction between rod and rail, a constant force is still required to keep the rod moving to the right with the same velocity.
B) The induced current flows counter-clockwise.
C) As the rod AB moves to the right, the magnitude of the flux through the surface ABCD increases.
D) The agent moving the rod to the right must be doing zero work on the rod
E) The magnetic field due to the INDUCED current points within the loop ABCD into the plane of the paper.
Explanation / Answer
A) T
B) F
C) F
D) F
F) T
As the rod moves towards right magnetic flux through the loop decreases and induced current flows in clockwise direction. To moves the rod towards right there must be external force, because the magnetic field exert force on the rod towards left.
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