Question

What is B in magnetic field?

Answer 1

1. Magnetic flux density is the number of magnetic lines of force passing through a magnetic field.
2. Magnetic flux density $\left(\mathrm{B}\right)$ is the amount of magnetic flux in an area taken perpendicular to the magnetic flux’s direction.
3. It is denoted by the symbol $\left(\mathrm{B}\right)$
4. It is measured in the units of Tesla.
5. The equation of the magnetic field density is given as
   $\mathrm{B}=\mathrm{\mu }\left(\mathrm{H}+\mathrm{M}\right)$
   Where, $\mathrm{B}$ represents the magnetic flux density, $\mathrm{\mu }$ represents the magnetic permeability, $\mathrm{H}$ represents the magnetic field and $\mathrm{M}$ represents magnetization.
6. While describing magnetic flux $\left(\mathrm{B}\right)$ represents magnetic field.
7. From the mathematical formula of flux we can write,
   $$\begin{gathered} \mathrm{\phi }=\mathrm{B}.\mathrm{A} \\ \mathrm{\phi }=\mathrm{BAcos\theta } \end{gathered}$$
   where,$\mathrm{\phi }$ represents magnetic flux, $\mathrm{B}$ represents magnetic field, $\mathrm{A}$represents area of the surface and $\mathrm{\theta }$ represents angle at which the field lines pass through the given surface area.