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Inside a bar magnet, the direction of magnetic field lines is from its:
South pole to its North pole
always perpendicular to the North pole
North pole to its South pole
always perpendicular to the South pole
South pole to its North pole
Inside a bar magnet, magnetic field lines always flow from the South pole to the North pole. This ensures the formation of continuous closed loops, as magnetic field lines move from the North to the South pole outside the magnet and from the South to the North pole inside it.
Inside a bar magnet, magnetic field lines always flow from the South pole to the North pole. This ensures the formation of continuous closed loops, as magnetic field lines move from the North to the South pole outside the magnet and from the South to the North pole inside it.
Think of a circular racing track: the cars travel from the 'North' zone to the 'South' zone on the outdoor straightaway, but they must return through the indoor tunnel from the 'South' zone back to the 'North' zone to complete the lap.
SN-Inside (South to North Inside)
╬жBтАЛ=тИоBтЛЕdA=0 тАФ Gauss's Law for Magnetism, representing that magnetic monopoles do not exist.
A bar magnet acts as a magnetic dipole. Because magnetic monopoles do not exist, magnetic field lines are always continuous, closed loops. Outside the magnet, the field originates from the North (N) and terminates at the South (S). To complete the path, the flux lines must return through the body of the magnet from South to North, maintaining the solenoid-like field structure.
Magnetic field lines are continuous closed loops.
Outside the magnet, the direction is North to South.
Inside the magnet, the direction is South to North.
Lines never intersect each other.
Ensures the consistency of Maxwell's equations.
Helps in visualizing the magnetic flux density.
Electromagnetic induction in generators
Design of MRI machines
| Feature | Outside Magnet | Inside Magnet |
|---|---|---|
Region | North to South | South to North |
The density of field lines represents the strength of the magnetic field.
Option B (perpendicular) is physically incorrect as field lines follow the path of least reluctance.
Option D (North to South) is incorrect as that describes the external path.
A is correct тАФ Inside a bar magnet, the magnetic field lines are directed from the South pole to the North pole to complete the closed loop.
Remember that magnetic field lines behave exactly like the flow of an incompressible fluid; they must always complete a circuit, which is why they turn around inside the magnet.
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