A) 3.0
B) \[3\times {{10}^{-6}}\]
C) \[8.3\times {{10}^{6}}\]
D) \[1.2\times {{10}^{-7}}\]
Correct Answer: A
Solution :
Intensity of magnetisation, \[I=\frac{M}{V}=\frac{\text{M}}{\text{mass/density}}\] Given, \[=1g={{10}^{-3}}\,kg\] and density \[=5g/c{{m}^{3}}\] \[=\frac{5\times {{10}^{-3}}kg}{{{({{10}^{-2}})}^{3}}{{m}^{3}}}\] \[=5\times {{10}^{3}}kg/{{m}^{3}}\] Here, \[I=\frac{6\times {{10}^{-7}}\times 5\times {{10}^{3}}}{{{10}^{-3}}}=3\,A/m\]You need to login to perform this action.
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