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EMF in Physics MCQ (Multiple Choice Questions) PDF Download
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The 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; "EMF in Physics" App Download [Free] with answers: 47 rad s-1, 49 rad s-1, 42 rad s-1, and 48 rad s-1 to study online classes courses. Practice EMF in Physics Quiz Questions, download Apple eBook (Free Sample) for best online ACT prep class.
EMF in Physics Questions and Answers PDF Download
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
- 47 rad s-1
- 49 rad s-1
- 42 rad s-1
- 48 rad s-1
Whenever magnetic flux linked with a coil changes, the induced EMF in the circuit will change
- for a short time
- for a long time
- forever
- as long as change in flux
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
- 1.4 × 10-3
- 2.4 × 10-3
- 3.4 × 10-3
- 4.4 × 10-3
Back EMF is 120 V when motor is turning at 1680 revs per min. The back EMF when motor rotates at 3360 revs per min, will be
- 220 V
- 240 V
- 260 V
- 280 V
Michael Faraday observed that EMF was set up in a conductor in the year of
- 1831
- 1832
- 1840
- 1842
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