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What are the properties of magnetic field due to a current through a straight wire?

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What are the properties of magnetic field due to a current through a straight wire?

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The properties of magnetic field due to a current flowing through a straight wire are:

  • The magnitude of the magnetic field produced at a given point increases as the current through the wire increases.

  • The magnetic field produced by a given current in the conductor decreases as the distance from it increases.

  • The concentric circles representing the magnetic field around a current-carrying straight wire become larger and larger as we move away from it.

  • If the direction of the current is reversed in the wire, the lines will still be circular, but the directions of the lines will be reversed, which can be verified using the compass needle.

 

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