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Electromagnetic Induction

Section: Physics

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Question : 4

Total: 18

A thin conducting rod MN of mass 20‌gm, length 25‌cm and resistance 10Ω is held on frictionless, long, perfectly conducting vertical rails as shown in the figure. There is a uniform magnetic field B0=4T directed perpendicular to the plane of the rod-rail arrangement. The rod is released from rest at time t=0 and it moves down along the rails. Assume air drag is negligible. Match each quantity in List-I with an appropriate value from List-II, and choose the correct option.
[Given: The acceleration due to gravity g=10m s−2 and e−1=0.4 ]

List-I	List-II
(P) At t=0.2 s, the magnitude of the induced emf in Volt	(1) 0.07
(Q) At t=0.2 s, the magnitude of the magnetic force in Newton	(2) 0.14
(R) At t=0.2 s, the power dissipated as heat in Watt	(3) 1.20
(S) The magnitude of terminal velocity of the rod in m s−1	(4) 0.12
	(5) 2.00

[JEE Adv 2023 P1]

P→5,Q→2,R→3,S→1
P→3,Q→1,R→4,S→5
P→4,Q→3,R→1,S→2
P→3,Q→4,R→2,S→5

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