Question

The magnetization curve for a ferromagnetic material is shown in the diagram. The value of relative permeability is highest at point,

• A. $\text{P}$
• B. $\text{Q}$
• C. $\text{R}$
• D. Data insufficient

Answer 1

The correct option is D Data insufficient


$B={\mu }_o{\mu }_{r}H$

$\Rightarrow \frac{B}{H}={\mu }_o{\mu }_r$

$\Rightarrow {\mu }_r\propto \frac{B}{H}$

As the exact values of $B$ and $H$ is not given in the graph, hence, we cannot calculate ${\mu }_r$.

Therefore, the data is insufficient.