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What type of core is used to make an ele...

What type of core is used to make an electromagnet?

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Soft iron core.
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PRADEEP-MAGNETIC EFFECTS OF ELECTRIC CURRENT-Additional Questions A. (very short)
  1. What is the composition of the alloy Alnico?

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  2. What is the composition of the alloy Nipermag?

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  3. What type of core is used to make an electromagnet?

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  4. What are permanent magnets made of?

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

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  6. Name the rule to find the direction of force on a current-carrying con...

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  7. What is the relation between a tesla, an ampere and a meter.

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  8. What is the force acting on charge (q) moving in a direction perpendic...

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  9. Which rule do we use to find the direction of this force?

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  10. How are magnetic field lines related to the strength of a magnetic fie...

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  11. What is the relation between magnetic field (B), current (I) and dista...

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  12. What is the magnitude of force acting on a current-carrying conductor ...

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  13. What important observation did Oersted make in his experiment with cur...

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  14. Why is magnetic field maximum at the centre of a current-carrying coil...

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  15. What is electromagnetic induction?

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  16. What do you mean by magnetic flux?

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  17. Name the rule which gives the direction of induced current?

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  18. Name the device which converts mechanical energy into electrical energ...

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  19. What type of dynamo is used in a bicycle?

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  20. What type of dynamo is used in industry?

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