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Activity 11.6 — Heating Effect of Electric Current
NCERT Activity 11.6: Observe the heating effect of electric current through a nichrome wire. Discover why H = I²Rt and why nichrome is used in heating elements.
How To Perform
1
Set Up Circuit
Connect a nichrome wire to a battery through a switch.
2
Pass Current
Close the switch and watch the wire heat up and glow. Increase current to see more heating.
3
Compare Materials
Replace nichrome with copper — observe the difference.
4
Understand
Why is nichrome used in heating elements, not copper?
⚠️ Safety Notes
- •Do not touch the nichrome wire when current is flowing — it gets very HOT!
- •Do not exceed the rated current for the wire.