IIT JEE Questions And Answers :: Electromagnetic Induction Electromagnetic Waves: part2



IIT JEE : Electromagnetic Induction Electromagnetic Waves QUESTIONS AND ANSWERS :: part2 : 16 to 20

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

16.A coil of wire of radius R has 200 turns and a self-inductance of 108 mH. The self-inductance of a similar coil of 500 turns will be:

375 mH
527 mH
675 mH
none of these

17.When the speed of the coil of generator is increased

the induced emf decreases but frequency increases.
the induced emf increases but frequency decreases
the induced emf increases and frequency also increases
both emf and frequency remain same

18.One 10 V, 60 W bulb is to be connected to 100 V line. The required self-inductance of induction coil will be: (f = 50 Hz)

0.052 H
2.42 H
16.2 H
16.2 mH

19.The time constant of C-R circuit is:

1/CR
C/R
CR
R/C

20.A 50 Hz AC current of crest value 1 A flows through the primary of a transformer. If the mutual inductance between the primary and secondary be 0.5 H, the crest voltage induced in the secondary is:

75 V
150 V
100 V
none of these

More Electromagnetic Induction Electromagnetic Waves QUESTIONS AND ANSWERS available in next pages

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