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Fill in the following blanks with suitab...

Fill in the following blanks with suitable words :
(a) Fleming's Rule for the motor effect uses the ……… hand.
(b) A motorf contains a kind of switch called a …………… which reverses the current every half …………. .

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The correct Answer is:
N/a
(a) Left (b) commutator , rotation ,
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. In an electric motor, which of the following remains fixed and which r...

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

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

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

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  5. State Fleming's left-hand rule.

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

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

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

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

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

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

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  12. The force experienced by a current-carrying wire placed in a magnetic ...

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  13. The force experienced by a current-carrying wire placed in a magnetic ...

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  14. A current flows in a wire running between the S and N poles of a magne...

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  15. A electric motor is a device which transforms :

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  16. A magnetic field exerts no force on

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  17. A horizontal wire carries a current as shown as shown in Figure below ...

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  18. If the current in a wire is flowing in the vertically downward directi...

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  19. Which way does the wire in the diagram below tend to move ?

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  20. Name the derive which converts mechanical energy into electric energy.

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