A) \[\frac{{{\mu }_{0}}i}{4}\left( \frac{1}{{{R}_{1}}}-\frac{1}{{{R}_{2}}} \right)\]
B) \[\frac{{{\mu }_{0}}i}{4}\left( \frac{1}{{{R}_{1}}}+\frac{1}{{{R}_{2}}} \right)\]
C) \[\frac{{{\mu }_{0}}i}{4}({{R}_{1}}-{{R}_{2}})\]
D) \[\frac{{{\mu }_{0}}i}{4}({{R}_{1}}+{{R}_{2}})\]
Correct Answer: A
Solution :
In the following figure, magnetic fields are O due to sections 1, 2, 3 and 4 are considered as \[{{B}_{1}},\,\,{{B}_{2}},\,\,{{B}_{3}}\,\,and\,\,{{B}_{4}}\] respectively.You need to login to perform this action.
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