Question 10 โ€” Coil with the nail removed - Questions at the end of the chapter - Chapter 4 Class 8 - Electricity: Magnetic & Heating Effects(Curiosity)

Last updated at June 5, 2026 by

Q 10
Question

Neha keeps the coil the same as in Activity 4.4 but slides the iron nail out, leaving only the coil. Will the coil still deflect the compass? If yes, will the deflection be more or less than before?

๐Ÿ”— Concept: 4.1.1 Electromagnets

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Yes, it still deflects the compass, but the deflection is less.

Explanation

  • The coil with current is still a magnet on its own.
  • So it still deflects the compass needle.
  • But the iron core made the magnet stronger.
  • Without the nail, the magnet is weaker, so the deflection is less.
The coil still works, but is weaker without the iron core.
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