Electromagnetic Induction Questions and Answers PDF for test preparation. Includes MCQs on electromagnetic induction, available in PDF format for MDCAT and other exams. Electromagnetism MCQs with answers PDF and online test options are also provided.
‘X’ set up in the drum exert a torque on the drum to stop the train. Identify X.
A. Eddy currents
B. Air pressure
C. Induction
D. Electromagnetic oscillationsWhat is measured by the eddy currents induced in energy meters ?
A. Electric power
B. Electric energy
C. Electric potential
D. Electric inductionTwo 300 uH coils in series without mutual coupling have a total inductance of _____.
A. 150 uH
B. 75 uH
C. 600 uH
D. 300 uHLenz’s law is a consequence of the law of conservation of _____.
A. Energy
B. Induced e.m.f.
C. Induced current
D. ChargeWhich of the following is unit of inductance ?
A. Henry
B. Weber/metre
C. Ohm
D. Ampere turnsThe direction of induced e.m.f. can be found by:
A. Fleming’s right hand rule
B. Kirchhoff s voltage law
C. Lenz’s law
D. Laplace’s lawAn open coil has _____.
A. Infinite resistance and normal inductance
B. Zero resistance and high inductance
C. Infinite resistance and zero inductance
D. Zero resistance and inductanceWhich of the following is not a unit of inductance ?
A. Coulomb/volt ampere
B. Volt second per ampere
C. Henry
D. All of the aboveA crack in the magnetic path of an inductor will result in ______.
A. Zero inductance
B. Reduced inductance
C. Unchanged inductance
D. Increased inductanceThe coefficient of coupling between two air core coils depends on _____.
A. Mutual inductance between two coils only
B. Mutual inductance and self inductance of two coils
C. Self-inductance of two coils only
D. None of the above