Question

what magnetic field lines? how is the direction of a magnetic field at a piont in a magnetic field determined using Field line​

Answer 1

The region around a magnet in which other magnets or current carrying conductors experience magnetic force of attraction or repulsion is called magnetic field.

The magnetic field is represented by magnetic field lines.

They are path either straight or curved and tangent drawn at a particular point on a magnetic field line gives the direction of magnetic field at that point.

Answer 2

Answer:

These are the imaginary straight lines which describe the direction of the magnetic field in a particular region. The tangent to these lines give the direction of the magnetic field for that point.

I hope it helped you!!