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Which material is used to make electroma...

Which material is used to make electromagnets and why?

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MODERN PUBLICATION-MAGNETISM AND MATTER-REVISION EXERCISE (VERY SHORT ANSWER QUESTION)
  1. चुंबकीय क्षेत्र रेखाएँ वायु की अपेक्षा लौह चुंबकीय पदार्थों में से गुज...

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  2. Why is diamagnetism independent of temperature?

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  3. Write one important property of a paramagnetic material.

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  4. Give some examples of paramagnetic substances.

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  5. How are magnetic susceptibility 'x' and relative magnetic permeability...

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  6. चुंबकीय क्षेत्र की अनुपस्थिति में अनुचुंबकीय पदार्थ कैसा व्यवहार दर्शा...

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  7. What are ferromagnetic substances ?

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  8. Give some examples of ferromagnetic substances.

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  9. What is curie temperature?

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  10. An iron bar magneti is heated to 1000^@C and then cooled in a magnetic...

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  11. What is the effect of rise of temperature on the susceptibility of a f...

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  12. शैथिल्य ( hysteresis ) प्रदर्शित करते है

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  13. धारणशीलता ( retentivity ) से आप क्या समझते है ?

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  14. What is meant by coercivity ?

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  15. What is the basic use of hysteresis curve?

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  16. PERMANENT MAGNET

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  17. The material for making permanent magnets should have:

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  18. Why is soft-iron not used for making a permanent magnet?

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  19. Which material is used to make electromagnets and why?

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  20. Write the usage of electromagnets.

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