Question

What are ‘magnetic field lines’? How is the direction of a magnetic field at a point determined ?
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Answer 1

Answer:

A magnetic field line is the path along which a free north-pole tends to move. The direction of a magnetic field at a point is determined by placing a small compass needle. The N - pole of compass indicates the direction of magnetic field at that point.

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Answer 2

the magnetic field lines are the pictorial representation of the strength and direction of the magnetic field.

the direction of the magnetic field at a point can be found by placing a small magnetic compass at that point. The north end of the needle of a compass indicates the direction of magnetic field at a point where it is placed.

Explanation:

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