A) \[(-{{i}_{1}}-{{i}_{2}}+{{i}_{3}}){{\mu }_{0}}\]
B) \[(-{{i}_{1}}+{{i}_{2}}){{\mu }_{0}}\]
C) \[{{i}_{3}}{{\mu }_{0}}\]
D) \[({{i}_{1}}+{{i}_{2}}){{\mu }_{0}}\]
Correct Answer: D
Solution :
\[\oint{\mathbf{B}.\,}dl={{\mu }_{0}}({{i}_{1}}+{{i}_{3}}+{{i}_{2}}-{{i}_{3}})={{\mu }_{0}}({{i}_{1}}+{{i}_{2}})\] [Since, for the given direction of circulation\[{{i}_{3}}\]entering at PSTU is positive while\[{{i}_{3}}\]at PQRS is negative]You need to login to perform this action.
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