Which of the following relations is not correct ? (A) \( B=\mu_{0}(...

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Which of the following relations is not correct ?
(A) \( B=\mu_{0}(\mathrm{H}+\mathrm{I}) \)
(B) \( B=\mu_{0} \mathrm{H}\left(1+\chi_{m}\right) \)
(C) \( \mu_{0}=\mu\left(1+\chi_{m}\right) \)
(D) \( \mu_{r}=1+\chi_{m} \)
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