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Earn 100

Explain why resistance coils are usually double wound.

Important Questions on Electromagnetic Induction

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 35
A glass rod of length L moves with velocity v in a uniform magnetic field B. What is the emf induced in the rod?
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 36
Are eddy currents useful or harmful?
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 37
A train is moving with uniform velocity from north to south. Will any induced emf appear across ends of the axle.
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 38

Two inductors having inductances L1 and L2 are connected

in series

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 38

Two inductors having inductances L1 and L2 are connected

in parallel. What is their equivalent?

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 39

If resistances R in circuit (a) of the figure shown, is decreased, what will be the direction of induced current in circuit (b)?

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 40

In the figure, P and S are two coils. What shall be the direction of induced momentary current in S immediately after the switch is closed? If the switch is opened, after it has been closed for some time?

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 41
Which factors govern the magnitude of emf induced in a coil?