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Question

How electric charges generated by rubbing are different from the charges that make a bulb glow? [3 MARKS]

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Solution

Each point: 1 Mark

1. The electrical charges generated by rubbing are static. They do not move by themselves.
2. When charges move, they constitute an electric current.
3. Current in a circuit which makes a bulb glow, or the current that makes a wire hot, is nothing but a motion of charges.


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