Question

Coersivity of a magnet where the ferromagnet gets completely demagnetized is $3 \times 10^3 Am^{?

• A. 3 A
• B. 30 mA
• C. 6 A
• D. 60 mA

Answer 1

Answer: (A)

3 A

Answer 2

$H=nl \, \therefore\, I=\frac{H}{n}=\frac{3\times10^{3}}{1000}=3A$