Question

what is magnetic field line​

Answer 1

Answer:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetized materials.

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Answer 2

Answer:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetized materials. A charge that is moving in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.