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  4. The following figure shows the variation of intensity of magnetisation I versus the applied magnetic field intensity H , for two magnetic materials textA and textB <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-008pbcsbv5xn.png /> Which of the material have a larger susceptibility for a given field at constant temperature?

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Q. The following figure shows the variation of intensity of magnetisation $I$ versus the applied magnetic field intensity $H$ , for two magnetic materials $\text{A}$ and $\text{B}$

Question

Which of the material have a larger susceptibility for a given field at constant temperature?

NTA AbhyasNTA Abhyas 2020Moving Charges and Magnetism

Solution:

Material $A$ is paramagnetic and Material $B$ is ferromagnetic.
The susceptibility of material $B$ is larger than $A$ at given magnetic field because ferromagnetic material gets strongly magnetised and hence produces a larger intensity of magnetization in comparison to paramagnetic substance, therefore it is strongly magnetised.