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Lenz's law and eddy currents

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Every question from past board papers on Lenz's law and eddy currents, newest paper first. Open any question for its full worked answer.

NEET UG 2024 question paper (official, booklet S6)

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  1. In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:

    bar magnet N-S moving from solenoid-1 (A,B) to solenoid-2 (C,D)

    4 marks · See worked answer →

  2. A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to :

    A. hold the sheet there if it is magnetic.

    B. hold the sheet there if it is non-magnetic.

    C. move the sheet away from the pole with uniform velocity if it is conducting.

    D. move the sheet away from the pole with uniform velocity if it is both, non-conducting and non-polar.

    Choose the correct statement(s) from the options given below:

    4 marks · See worked answer →

NEET UG 2019 question paper (official, booklet P1)

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  1. In which of the following devices, the eddy current effect is not used ?

    4 marks · See worked answer →