Magnetic permeability is maximum for:
- paramagnetic substances
- ferromagnetic substances
- diamagnetic substances
- all of the above
The Correct Option is B
Approach Solution - 1
Approach Solution -2
The magnetic permeability formula, which is the ratio of magnetic induction to magnetic intensity, may be used to determine a material's resistance to the magnetic field or the amount to which a magnetic field may penetrate through a substance.
According to Faraday's Law of Magnetic Induction, materials respond differently in the presence of an external magnetic field. This response is actually influenced by a variety of variables, including the material's atomic and molecular structure and the net magnetic field around its atoms. The magnetic forces of a material's electrons are impacted when it is placed in a magnetic field; this phenomenon is referred to as magnetic induction.
Due to their high positive sensitivity to the external magnetic field, strong attraction to magnetic fields, and ability to retain their magnetic properties long after the external field has been removed, ferromagnetic materials have the maximum magnetic permeability.
The explanation is that ferromagnetic materials include some unpaired electrons, giving their atoms a net magnetic moment. The presence of magnetic domains in these domains, where a lot of atoms' moments (1012 to 1015) are aligned parallel, is what gives these domains their high magnetic characteristics.
Thus, option B is the best decision.
Approach Solution -3
The permeability is the ratio of the magnetic flux density B in a substance to the external magnetic field H. In substances like diamagnetic, ferromagnetic, and paramagnetic, the ferromagnetic substance has the maximum permeability.
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Concepts Used:
Magnetism & Matter
Magnets are used in many devices like electric bells, telephones, radio, loudspeakers, motors, fans, screwdrivers, lifting heavy iron loads, super-fast trains, especially in foreign countries, refrigerators, etc.
Magnetite is the world’s first magnet. This is also called a natural magnet. Though magnets occur naturally, we can also impart magnetic properties to a substance. It would be an artificial magnet in that case.
Read More: Magnetism and Matter
Some of the properties of the magnetic field lines are:
- The lines and continuous and outside the magnet, the field lines originate from the North pole and terminate at the South pole
- They form closed loops traversing inside the magnet.
- But here the lines seem to originate from the South pole and terminate at the North pole to form closed loops.
- More number of close lines indicate a stronger magnetic field
- The lines do not intersect each other
- The tangent drawn at the field line gives the direction of the field at that point.