A 1 m long metal rod AB completes the circuit as shown in figure. The area of circuit is perpendicular to the magnetic field of 0.10 T. If the resistance of the total circuit is 
then the force needed to move the rod towards right with constant speed (v) of 
is 
N.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Given: 
Motional EMF: 
Current: 
Magnetic force on rod: 
For constant velocity, applied force equals magnetic force.
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