Shikha was working on the functioning of an electric circuit. She kept a magnetic compass
near a closed electric circuit. She observed that when she put the switch ON, the magnetic
compass showed deflection and when she put the switch OFF, there was no deflection in the
magnetic compass
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It is so because - Around the electric flow of current, there is also a magnetic field. So when the switch is ON and the current passes through the circuit, it also produces a magnetic field around it which makes the magnetic compass needle to deflect.
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