JEE PHYSICS UNIT 14
QUIZ NO 1
TOTAL QUESTIONS = 20


1. Faraday's law of electromagnetic induction states that the induced emf in a circuit is proportional to the


2. Lenz's law is a consequence of the law of


3. The unit of self-inductance is


4. A coil of inductance L and resistance R is connected to a battery of emf E. The final steady-state current is


5. In an AC circuit containing only a capacitor, the current


6. The resonant frequency of an LC circuit is given by


7. The quality factor (Q-factor) of a series resonant circuit is a measure of


8. In a transformer, the primary coil has 100 turns, and the secondary coil has 200 turns. If the primary voltage is 220 V, the secondary voltage is


9. The phenomenon of eddy currents is utilized in


10. The time constant of an RL circuit is given by


11. In a purely inductive AC circuit, the power consumed over a complete cycle is


12. The peak value of an alternating current is 10 A. Its RMS value is approximately


13. Mutual inductance between two coils depends on


14. The back emf in a motor is maximum when


15. In a series LCR circuit at resonance, the impedance is


16. The power factor of a purely resistive AC circuit is


17. Skin effect in conductors carrying AC is due to


18. The inductive reactance of a coil is given by


19. In an AC generator, the frequency of the induced emf depends on


20. The phenomenon where an emf is induced in a coil due to a changing current in a neighboring coil is called



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