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Question
Describe a simple experiment to prove that a copper wire conducts electricity, but a piece of coal does not.
Solution
Experiment to prove that a copper wire conducts electricity
- Take a copper, battery, bulb and loose wire.
- Join the circuit i .e. wire with the battery, copper and bulb as shown in the figure.
- We will observe that the bulb glows, as metal i.e. copper is the good conductor of electricity.
Experiment to prove that coal does not conducts electricity
- Take a coal, battery, bulb and wire.
- Join the circuit e. wire with battery, coal and bulb as shown in the figure.
- We will observe that the bulb will not glow, as non-metal — i.e. coal is bad conductor of electricity.
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