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Practice MCQs on emf in physics, physics MCQs for online test prep. Electromagnetic induction in physics quiz has multiple choice questions (MCQ), emf in physics quiz questions and answers as square coil of side 16 cm having 200 turns rotating in magnetic field of 0.05 t with peak emf of 12 v will produce angular velocity of, answer key with choices as 47 rad s-1, 49 rad s-1, 42 rad s-1 and 48 rad s-1 for competitive exam prep. Free study guide is to learn emf in physics quiz online with MCQs to practice test questions with answers. EMF in Physics Video

MCQ. Square coil of side 16 cm having 200 turns rotating in magnetic field of 0.05 T with peak EMF of 12 V will produce angular velocity of

A

MCQ. Whenever magnetic flux linked with a coil changes, induced EMF in circuit will change

1. for a short time
2. for a long time
3. forever
4. as long as change in flux

D

MCQ. An EMF of 5.6 V is induced in a coil while current in coil is decreased from 100 A to 20 A in 0.02 s, its mutual induction will be

1. 1.4 × 10-3
2. 2.4 × 10-3
3. 3.4 × 10-3
4. 4.4 × 10-3

A

MCQ. Back EMF is 120 V when motor is turning at 1680 revs per min. back EMF when motor rotates at 3360 revs per min, will be

1. 220 V
2. 240 V
3. 260 V
4. 280 V

B

MCQ. Michael Faraday observed that EMF was set up in a conductor in year of

1. 1831
2. 1832
3. 1840
4. 1842

A