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What is an artificial magnet ? State two...

What is an artificial magnet ? State two reasons why do we need artificial magnets.

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ICSE-MAGNETISM -EXERCISE-10(A)
  1. What is a lodestone ?

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  2. What is a natural magnet ? State two limitations of a natural magnet.

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  3. What is an artificial magnet ? State two reasons why do we need artifi...

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  4. How will you test whether a given rod is made of iron or copper?

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  5. You are given two similar bars. One is a magnet and the other is of so...

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  6. Fill in the blanks to complete the sentences : Two ends of a magnet ...

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  7. Fill in the blanks to complete the sentences : Unlike poles of a mag...

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  8. Fill in the blanks to complete the sentences : Like poles of a magne...

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  9. Fill in the blanks to complete the sentences : A freely suspended ma...

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  10. A small magnet is suspended by a silk thread from a rigid support such...

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  11. Explain the term induced magnetism.

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  12. Explain what do you understand by magnetic induction. What role does i...

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  13. Explain the mechanism of attraction of iron nails by a magnet when bro...

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  14. Explain the following: When two pins are hung by their heads from the ...

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  15. Explain the following: Several soft iron pins can cling, one below the...

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  16. Explain the following: The north end of a freely suspended magnetic ne...

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  17. A small iron bar is kept near the north pole of a bar magnet. How does...

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  18. Induced magnetism is temporary'. Comment on this statement.

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  19. Induction precedes attraction'. Explain the statement.

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  20. What do you understand by the term magnetic field lines ?

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