A) \[5\times {{10}^{5}}A\]
B) \[6\times {{10}^{5}}A\]
C) \[5\times {{10}^{4}}A\]
D) \[6\times {{10}^{4}}A\]
Correct Answer: A
Solution :
(a) \[5\times {{10}^{5}}A\] Here, \[l=50\,cm=0.5\,m,M={{10}^{6}}A{{m}^{-1}}\] As \[M=\frac{magnetisation\,\,current({{l}_{m}})}{l(length)}\] Then, \[{{l}_{M}}=M\times l\] \[={{10}^{6}}\times 0.5=5\times {{10}^{5}}A\]You need to login to perform this action.
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