What is the advantage of the third wire of earth connection in domestic appliances?

  • A
    It prevents the appliance from overheating.
  • B
    It provides a path for leakage current to flow to the ground,preventing electric shocks.
  • C
    It increases the efficiency of the appliance.
  • D
    It helps in reducing the electricity bill.

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$(a)$ Describe an experiment with a diagram to show that force is exerted on a current-carrying conductor when placed perpendicular in a magnetic field.
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