Will the compass needle show deflection when the switch in the circuit shown by Fig. is closed?
Will the compass needle show deflection when the switch in the circuit shown by Fig. is closed?
Solution and Explanation
No, the compass needle will not show deflection even though the switch is closed, because there is no source of electric current (Battery or cell). An electric cell or battery needs to be connected here. In the absence of electric current, there is no magnetic field produced by the wires. Hence there is no deflection.
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