Two identical conductors P and Q are placed on two frictionless rails R and S in a uniform magnetic field directed into the plane. If P is moved in the direction shown in figure with a constant speed, then rod Q
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a
will be attracted toward P
b
will be repelled away from P
c
will remain stationary
d
may be repelled away or attracted toward P
answer is A.
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Detailed Solution
From Lenz's law if one rod is moved away from the second rod then the second rod will be attracted towards the first rod so asto oppose the change in flux.