ElectroMagnetic InductionHardBloom L4
Question
Two metallic rings A and B, identical in shape and size but having different resistivities ρA and ρB, are kept on top of two identical solenoids as shown in the figure. When current I is switched on in both the solenoids in identical manner, the rings A and B jump to heights hA and hB, respectively, with hA > hB. The possible relation(s) between their resistivities and their masses mA and mB is(are)
Options
A.ρA > ρB and mA = mB
B.ρA < ρB and mA = mB
C.ρA > ρB and mA > mB
D.ρA < ρB and mA < mB
Solution
As - 
= emf is same, the current induced in the ring will depend upon resistance of the ring. Larger the resistivity smaller the current.
= emf is same, the current induced in the ring will depend upon resistance of the ring. Larger the resistivity smaller the current.Create a free account to view solution
View Solution FreeMore ElectroMagnetic Induction Questions
In the circuit shown in figure bulb will become suddenly bright if :-...A current flows through a rectangular solid conductor in the presence of uniform magnetic field B pointing out of the pa...In a coil of self inductance of 5henry, the rate of change of current is 2 ampere per second, the e.m.f. induced in the ...An athelete runs at a velocity of 30 km/hr. towards east with a 3 meter rod. The horizontal component of the earth is 4 ...A coil of resistance 10Ω and 1000 turns have the magnetic flux line of 5.5 × 10-4 Wb. If the magnetic flux cha...