A) \[2.5\times {{10}^{3}}A{{m}^{-1}}\]
B) \[2.5\times {{10}^{5}}A{{m}^{-1}}\]
C) \[2.0\times {{10}^{3}}A{{m}^{-1}}\]
D) \[2.0\times {{10}^{5}}A{{m}^{-1}}\]
E) \[5\times {{10}^{5}}A{{m}^{-1}}\]
Correct Answer: B
Solution :
Given,\[{{\mu }_{r}}=500,i=1\]and \[n=500\] Intensity of magnetisation \[I={{\chi }_{m}}H\] \[=({{\mu }_{r}}-1)ni\] \[=(500-1)\times 500\times 1\] \[=499\times 500\times 1\] \[=2.495\times 10s\] \[=2.5\times {{10}^{5}}A/m\]
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