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If a coil made of conducting wires is ro...

If a coil made of conducting wires is rotated between poles pieces of the permanent magnet. The motion will generated a current and this device is called

A

An electric motor

B

An electric generator

C

An electromagnet

D

All of the above

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The correct Answer is:
B
An electric generator
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ERRORLESS-ELECTROMAGNETIC INDUCTION-NCERT BASED QUESTIONS (APPLICATION OF EMI (Dynamo, Transformer…))
  1. If a coil made of conducting wires is rotated between poles pieces of ...

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  2. An AC generator of 220 V having internal resistance r=10 Omega and ext...

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  3. Voltage in the secondary coil of a transfomer does not depend upon

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  4. In an ideal transformer the number of turns of primary and secondary c...

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  5. A transformer rated at 10 kW is used to connect a 5 kV transmission li...

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  6. The turn ratio of a transformers is given as 2:3. If the current throu...

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  7. The primary winding of a transformer has 100 turns and its secondary w...

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  8. A step up transformer connected to a 220V AC line is to supply 22 kV f...

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  9. The primary winding of transformer has 500 turns whereas its secondary...

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  10. In a step-up transformer the turn ratio is 1:10. A resistance of 200 o...

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  11. In a transformer, number of turns in the primary coil are 140 and that...

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  12. A transformer is used to light a 100 W and 110 V lamp from a 220V main...

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  13. A transformer connected to 220 volt line shows an output of 2A at 1100...

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  14. A step-down transformer is used on a 1000 V line to deliver 20A at 120...

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  15. A step-down transfomer reduces the voltage of a transmission line from...

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  16. The number of turns of the primary and the secondary coils of a transf...

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  17. A transformer of efficiency 90% draws an imput power of 4kw. An electr...

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  18. A 220 V input is supplied to a transformer. The output circuit draws a...

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  19. Which of the following is not an application of eddy currents?

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  20. Eddy currents are produced when

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