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An AC generator is connected to an elect...

An AC generator is connected to an electrical appliances. In 10 revolutions of the armature the current is

A

5 times

B

10 times

C

20 times

D

40 times

Text Solution

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MODERN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE
  1. A charged particle moves thorugh a uniform magnetic field perpendicula...

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  2. The magnetic field lines inside a long current carrying solenoid are n...

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  3. An AC generator is connected to an electrical appliances. In 10 revolu...

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  4. An electron enters in a magnetic field at right angle to its shown in ...

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  5. The magnetic field at the centre of a current carrying circular coil d...

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  6. The direction of magnetic field at a point near a current carrying con...

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  7. A dynamo

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  8. An induced emf is produced when a magnet is plunged into a coil. The m...

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  9. The frequency of AC means in India is

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  10. An electrical bulb rated 220 V is connected to 220v, 5Hz AC source. Th...

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  11. When a charged particle moves perpendicular to a magnetic field, then

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  12. A straight wire of mass 200 g and length 1.5 m carries a current of 2 ...

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  13. The magnetic field at a distance r from a long wire carryimg current I...

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  14. A long solenoid carrying a current produces a magnetic field B along i...

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  15. The device used for producing electric current is

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  16. At the time of short circuit,the current in the circuit.

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  17. State whether the following statements are true or false: An electric ...

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  18. True or false A constant magnetic flux in a coil can induce current in...

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  19. True or false AC is more dangerous as compared to DC.

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  20. True or false AC is the best suitable for electroplating.

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