A) \[2{{\mu }_{0}}\]
B) Zero
C) \[-2{{\mu }_{0}}\]
D) \[-8{{\mu }_{0}}\]
Correct Answer: A
Solution :
By Amperes circular law \[\oint{B\,ds}={{\mu }_{0}}i\] [where, \[i=2.0A\]] \[={{\mu }_{0}}\times 2=2{{\mu }_{0}}\]
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