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Name one device which works on the magne...

Name one device which works on the magnetic effect of current.

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Problems based on Magnetic effects of current

LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. When is the force experienced by a current-carrying conductor placed i...

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  2. In a statement of Feming's left-hand rule, what do the following repr...

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  3. Name one device which works on the magnetic effect of current.

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  4. Name the device which converts electrical energy into mechanical energ...

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  5. A motor converts one form of energy into another. Name the two forms.

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  6. State whether the following statement is true or false : An electric...

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  7. For Fleming's left-hand rule, write down the three things that are 90^...

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  8. What is the other name of the split ring used in an electric motor ?

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  9. Of what substance are the brushes of an electric motor made ?

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  10. In an electric motor, which of the following remains fixed and which r...

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  11. What is the role of the split-ring in an electric motor?

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  12. Fill in the following blanks with suitable words : (a) Fleming's Rul...

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  13. (a) A current-carrying conductor is placed perpendicularly in a magnet...

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  14. State Fleming's left-hand rule.

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  15. What is the principle of an electric motor ? Name some of the devices ...

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  16. (a) In a d.c. motor, why must the current to the coil be reversed twic...

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  17. (a) State what would happen to the direction of rotation of a motor if...

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  18. (a) What is an electric motor ? With the help of a labelled diagram, d...

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  19. In an electric motor, the direction of current in the coil changes onc...

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  20. An electron beam enters a magnetic field right angles to it as shown i...

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