As shown in the figure, a metal bar is in contact with a pair of parallel rails and is in motion with an upward velocity of magnitude ν. A uniform magnetic field is present, directed downward as shown. The direction of the induced current through the resistor R is
A)from a to b.
B)from b to a.
C)No current is induced.

Question

As shown in the figure, a metal bar is in contact with a pair of parallel rails and is in motion with an upward velocity of magnitude ν. A uniform magnetic field is present, directed downward as shown. The direction of the induced current through the resistor R is 
A)from a to b. 
B)from b to a. 
C)No current is induced.

Quizplus · Accepted Answer

The Answer of As shown in the figure, a metal bar is in contact with a pair of parallel rails and is in motion with an upward velocity of magnitude ν. A uniform magnetic field is present, directed downward as shown. The direction of the induced current through the resistor R is 
A)from a to b. 
B)from b to a. 
C)No current is induced.

As Shown in the Figure, a Metal Bar Is in Contact