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Will the compass needle show deflection when the switch in the circuit shown by figure is closed?

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Question

Will the compass needle show deflection when the switch in the circuit shown by figure is closed?

Short/Brief Note
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Solution

  • No, because there is no source of electric current in this circuit, i.e., there is no battery.
  • In the absence of current, the wire does not behave as a magnet, and hence, the compass needle will not show any deflection.
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Chapter 10: Electric Current and Its Effects - Exercises [Page 120]

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NCERT Science [English] Class 7
Chapter 10 Electric Current and Its Effects
Exercises | Q 7. | Page 120

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