A space around a magnet or a conductor carrying current, in
which force of attraction or repulsion on a magnet can be perceived is called magnetic field. Faraday introduces
magnetic field line to visualize the existence of the lines.
According to the Faraday magnetic field lines are the imaginary
curve, tangent to which at any point gives the direction of magnetic field at
that point. The path along with compass needle is aligned is known as the magnetic field lines.
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