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Question

Boojho made an electromagnet by winding 50turns of wire over an iron screw. Paheli also made an electromagnet by winding 100 turns over a similar iron screw. Which electromagnet will attract more pins? Give reason.


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Solution

Electromagnet:

  1. An electromagnet is a magnet that functions based on electricity.
  2. Unlike a permanent magnet, the strength of an electromagnet can be changed by changing the amount of electric current that flows through it.
  3. Winding a wire tightly around a strong core formed of magnetic material, such as iron, can enhance this effect.
  4. The magnetic effect is directly proportional to the number of wire turns on the electromagnet.
  5. As a result of having an extra number of turns, Paheli's electromagnet will attract more pins.
  6. As a result, Paheli's electromagnet is a more powerful electromagnet than Boojho's.

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