Question

A magnet of magnetic moment 6 Am² weighs 65 g. The density of the material of the magnet is 6500 kg/m³. What is the magnetization?

Options

• 4 x 10⁵ A/m

• 3 x 10⁵ A/m

• 6 x 10⁵ A/m

• 2.5 x 10⁵ A/m

Answer 1

6 x 10⁵ A/m

Explanation:

Volume of the magnet,

`"V" = "mass"/"density"`

` = (65 xx 10^-3)/(65 xx 10^2) = 10^-5  "m"^3`

`therefore "Magnetization, M"_2 = "m"_"net"/"V" = 6 /10^-5`

`therefore  "M"_"z" = 6 xx 10^5  "A"//"m"`