Magnetism and Gauss Law – Class 12 | Chapter – 5 | Physics Short Notes Series PDF for NEET & JEE
Magnetism and Gauss Law: Magnetism is a fundamental force that is responsible for the behavior of magnets and magnetic materials. Gauss’s law, on the other hand, is a fundamental principle of electromagnetism that relates the electric flux through a closed surface to the charge enclosed within that surface.
Gauss’s law can be used to relate the magnetic flux through a closed surface to the magnetic field and current enclosed within that surface. This is known as the magnetic Gauss’s law, and it is one of the four Maxwell’s equations that describe the behavior of electromagnetic fields.
Magnetism and Gauss Law
Gauss’s Law for Magnetism or Gauss’s Law for Magnetic Fields, describes the behavior of magnetic fields and their sources.
Gauss’s Law for Magnetism states that the magnetic field passing through a closed surface is directly proportional to the total current passing through that surface. Mathematically, it is expressed as:
∮∫B⋅dA = μ0 * Ienc
Where,
- B is the magnetic field,
- dA is a differential element of the surface,
- μ0 is the permeability of free space,
- Ienc is the total current passing through the closed surface.
This law relates the sources of magnetic fields, which are electric currents, to the magnetic field itself. It is a fundamental principle of electromagnetism and is used in the design and analysis of many electromagnetic devices such as electric motors, generators, and transformers.
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