Magnetism Question 35

Question: The dipole moment of each molecule of a paramagnetic gas is $1.5 \times 10^{23} amp/ m^2$. The temperature of gas is $27^o$C and the number of molecules per unit volume in it is $2 \times 10^{26} m^3$. The maximum possible intensity of magnetisation in the gas will be

Options:

A) $3 \times 10^3 amp/m$

B) $4 \times 10^3 amp/m$

C) $5 \times 10^5 amp/m$

D) $ 6 \times 10^4 amp/m$

Show Answer

Answer:

Correct Answer: A

Solution:

$ I=\frac{M}{V}=\frac{\mu N}{V}=\frac{1.5\times {{10}^{-23}}\times 2\times 10^{26}}{1}=3\times 10^{3}Amp/m $