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Plot a magnetic field due to a circular coil carrying current and explain the law used to find the direction of magnetic field at the centre of circular coil carrying current.

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Answer Text

Solution :
The magnetic lines of force due to circular coil carrying current are perpendicular to the wire loop and are circular near the wire and practically straight near the centre of the wire loop figuer <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_XII_V01_C03_S01_450_S01.png" width="80%"> The direction of magnetic field at the centre of circular current loop is given by Right hand rule. For it refer to Art <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_XII_V01_C03_S01_450_S02.png" width="80%">

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