A magnetic field line is used to find the direction of:

south-north

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a bar magnet

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a compass needle

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magnetic field

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Solution

The correct option is D magnetic field
The magnetic field lines due to a straight wire carrying a current are concentric circles whose centres lie on the wire. Magnetic field lines are used to find direction of magnetic field.

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Similar questions

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A magnetic field line is used to find the direction of:

The correct option is D magnetic fieldThe magnetic field lines due to a straight wire carrying a current are concentric circles whose centres lie on the wire. Magnetic field lines are used to find direction of magnetic field.

The correct option is D magnetic field
The magnetic field lines due to a straight wire carrying a current are concentric circles whose centres lie on the wire. Magnetic field lines are used to find direction of magnetic field.