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Відповідь:
1. Chemical energy stored in the batteries is converted into electrical energy.
2. The amount of work done is measured in joules (J).
3. A constant flow of electricity travels around a circuit.
4. DC moves in one direction.
5. AC supply changes 50 times per second.
6. Do you know the difference between live and neutral conductors?
7. Don't switch off the light. I am working!
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