Question

What is ${\mu }_{max}$ equal to?

• A. ${\mu }_{max}\approx 1.0\times {10}^4$
• B. ${\mu }_{max}\approx 2.0\times {10}^4$
• C. ${\mu }_{max}\approx 1.0\times {10}^3$
• D. ${\mu }_{max}\approx 2.0\times {10}^3$

Answer 1

The correct option is A ${\mu }_{max}\approx 1.0\times {10}^4$

At the marked point; $B=1T$ and $H=0.1kA/m$ $\approx 1.2G$.

Now, $B={\mu }_{max}H\Rightarrow {\mu }_{max}=B/H\approx 1\times {10}^4$