what are magnetic field lines?
Magnetic field lines are imaginary lines used to represent the direction and strength of a magnetic field around a magnet or a current-carrying conductor.
Characteristics of Magnetic Field Lines:
They emerge from the North Pole and enter the South Pole outside the magnet.
Inside the magnet, they flow from South Pole to North Pole, forming closed loops.
They never intersect each other.
The closer the lines are, the stronger the magnetic field.
Example: Around a bar magnet, magnetic field lines curve from the north pole to the south pole, showing the path a magnetic compass would follow.
In simple terms: Magnetic field lines help us visualize how magnetic forces act around a magnet.