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Doctors Medicines MCQs Q&A

  1. B
  2. A
  3. D
  4. C
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Option 4 : C

Explanation:

  • All the electric appliances stop working in a house when the main switch is put off because the electric circuit (the path where the electricity travels) gets opened.
  • A circuit needs to be closed in order for current to flow through it and thus all electric appliances to work.
  • On switching off the mains switch of the house, live and neutral wires are disconnected in order to break the circuit.
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