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What is the role of the split-ring in an...

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

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The role of the split ring (called commutator) is an electric motor is to reverse the direction of current flowing through the motor coil after every half rotation of the coil. Due to this reversing of current, the direction of force remains unchanged on the two sides of the coil and hence the coil continues to rotate in the same direction.
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. State Fleming's left-hand rule.

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  2. What is the principle of an electric motor?

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

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  4. Explain different ways to induce current in a coil.

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  5. State the principle of an electric generator.

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  6. Name some sources of direct current.

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  7. Which sources produce alternating current?

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  8. Choose the correct option: A rectangular coil of copper wires is rot...

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  9. Name two safety measures commonly used in electric circuits and applia...

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  10. An electric oven of a 2kW power rating is operated in a domestic circu...

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  11. What precaution should be taken to avoid the overloading of domestic e...

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  12. Which of the following correctly describes the magnetic field near a l...

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  13. The device used for producing electric current is called a:

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  14. The essential difference between an AC generator and a DC generator is...

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  15. At the time of short-circuit, the current in the circuit:

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  16. State whether the following statements are true or false. (a) An ele...

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  17. List three sources of magnetic fields.

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  18. How does a solenoid behave like a magnet? Can you determine the north ...

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  19. When is the force experienced by a current-carrying conductor placed i...

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  20. Imagine you are sitting in a chamber with your back to one wall. An el...

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