Question

There are $2.0 \times 10^{24}$ molecular dipoles in a paramagnetic salt. Each has dipole moment $1.5 \times 10^{23} Am^2$. Find maximum (saturation) magnetization in the specimen.

• A. $200 \,Am^2$
• B. $50\, Am^2$
• C. $20\, Am^2$
• D. $30\, Am^2$

Answer 1

Answer: (D)

$30\, Am^2$

Answer 2

Maximum magnetization $= 2.0 \times 10^{24}\times 1.5 \times 10^{-23}$
$\Rightarrow 3\times 10$
$\Rightarrow 30 \,AM^{2}$