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Activity 12.1 — Magnetic Field Lines around a Bar Magnet
NCERT Activity 12.1: Visualize magnetic field lines around a bar magnet using iron filings and a compass.
How To Perform
1
Place the Magnet
Position a bar magnet on a sheet of paper and mark its poles.
2
Sprinkle Iron Filings
Tap the sheet gently and observe how the filings arrange along field lines.
3
Move the Compass
Place a compass at various positions around the magnet and record the needle direction.
4
Analyse Field Pattern
Identify where field lines are densest and what that tells us about field strength.
⚠️ Safety Notes
- •Handle the bar magnet carefully — it can pinch fingers.
- •Keep magnets away from electronic devices and credit cards.