In the circuit shown in the figure, when the key is closed, the compass needle placed in the matchbox deflects. Name the force which causes this deflection.
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In the circuit shown in the figure, when the key is closed, the compass needle placed in the matchbox deflects. It is the electromagnetic force that causes this deflection. When current starts flowing trough the wire, the a magnetic field is created around the wire that cause the needle to deflect.

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Updated on: 10-Oct-2022

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