If the magnetizing field on a ferromagnetic material is increased, its permeability.
We know that,
A ferromagnetic material, such as iron, does not have a constant relative permeability. As the magnetizing field increases, the relative permeability increases, reaches a maximum and then decreases.
Formula of the permeability is
$$\mu=\dfrac{B}{H}$$
Where, $$B$$ = magnetic field density
$$H$$ = magnetic field strength
The magnetic field strength is inversely proportional to the permeability.
So, The magnetizing field increases then the permeability decreases.
Hence, $$A$$ is correct option.
An iron rod is placed parallel to the magnetic field of intensity 2000 A/m. The magnetic flux through the rod is $$6 \times 10^{-4} Wb$$ and its cross-sectional area is 3 cm$$^2$$. The magnetic permeability of the rod in $$\dfrac{Wb}{A- m}$$ is:
The rising and setting of sun appear red because of :
Let $$[\varepsilon_o]$$ denote the dimensional formula of the permittivity of the vacuum, and $$[\mu_o]$$ that of the permeability of the vacuum. If M$$=$$mass, L$$=$$length, T$$=$$time and I$$=$$ electric current.
If $$\mu _{r}$$ be the relative permeability and $$\varepsilon _{r}$$ be the relative dielectric constant of a medium, its refractive index is:
The dimension of $$\sqrt{\dfrac{\mu }{\epsilon }}$$ where $$\mu$$ is permeability & $$\epsilon$$ is permittivity is same as :
The value of $$\mu_o$$ is __________.
Two substances A and B have their relative permeabilities slightly greater and slightly less than 1 respectively. What do you conclude about A and B as far as their magnetic materials are concerned?
In terms of potential difference V; electric current I, permittivity $$\varepsilon_0$$, permeability $$\mu_0$$ and speed of light c, the dimensionally correct equation(s) is(are).