Figure 9 below shows a metallic rod PQ resting on two parallel thick and smooth metallic rails CS…
Physics20253 marksShort answer
Figure 9 below shows a metallic rod PQ resting on two parallel thick and smooth metallic rails CS and DR. There is a uniform magnetic field B which is perpendicular to the rails.
(a)[1.0]
How much magnetic flux is linked to the closed circuit PQRS?
(b)[1.0]
If the rod PQ is moved on the rails with a constant velocity v, how much emf will be induced in it?
(c)[1.0]
How much power has to be spent by an external agency to maintain the motion of the rod PQ on the rails? Write your answer in terms of B, $l$, v and resistance R of the rod PQ.
