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What is the function of earth wire? Why ...

What is the function of earth wire? Why is it necessary to earth metallic appliances?

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NAND LAL PUBLICATION-MAGNETIC EFFECTS OF ELECRIC CURRENT -EXERCISES
  1. The phenomenon of electromagnetic is:

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  2. The device used for producing electric current is called:

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

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

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

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

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  7. State whether the following statements are true or false: The field at...

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  8. State whether the following statements are true or false. A wire with ...

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  9. Name the methods of producing induced emf.

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  10. How does a solenoid behaver like a magnet? Can you determine north and...

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

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  12. Imagine that you are sitting in a chamber with your back to one wall a...

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  13. What is an electric motor?

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  14. Name some devices in which electric motors are used.

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  15. A coil of insulated copper wire is connected to a galvanometer, what w...

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  16. Two circular coils A and B placed closed to each other.If the current ...

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  17. The direction of magnetic field produced on passing electric current i...

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

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  19. When does an electric short circuit occur?

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  20. What is the function of earth wire? Why is it necessary to earth metal...

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