Question

What is the magnetization of a bar magnet having length 5 cm and area of cross section 2 cm²? (M = 1 Am²)

Options

• 10^-4 A/m

• 10⁵ A/m

• 10^-5 A/m

• 10⁴ A/m

Answer 1

10⁵ A/m

Explanation:

`"M"_"z" = "M"_"net"/"V" = "M"/("A"l)`

` = 1/(2 xx 10^-4 xx 5 xx 10^-2)`

`= 10^5  "A/m"`