Activity 3.6 NCERT Class 10 Science, Chapter 3 Metals and Non-metals
Activity 3.6 asks us to connect a metal wire with a bulb in series and see what happens to the bulb.
Observation:
The bulb glows as bright as earlier.
Explanation:
Metals have free electrons in their valance shells. These free electrons move from one position to another. As a result, metals are a good conductor of electricity. When we connect a build to the battery by metal wires, electricity passes from the battery to the bulb. As a result, the bulb starts glowing.
Inference/conclusion:
This experiment demonstrates that metal wires are a good conductor of electricity.
Application:
In making wires at home, in making electric circuit board etc.
Some Facts:
When someone is electrocuted, we do not use a metal stick but we use a wooden or plastic stick. Metal stick or rods are good conductors of electricity. If someone tries to save an electrocuted person by that stick, he himself will get electrocuted.
Next: Comparision of metals with non-metals, Activity 3.7.
See also: Experiment to demonstrate metals are a good conductor of heat, Activity 3.5.
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