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CBSE Class 12-science Answered

Please explain it in detail and earlier
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Asked by modi72879 | 10 Jan, 2018, 06:43: PM
answered-by-expert Expert Answer
Amphere's law is given by begin mathsize 12px style contour integral B times d l space equals space mu subscript 0 i end style
First case :-  current going into page and current coming out of page cancel each other. Remaining current coming out of the page contributes for the path integral. hence  begin mathsize 12px style contour integral B times d l space equals space 2 mu subscript 0 end style
Second case :-  the path encloses even number of currents going into page and even number of currents coming out of page. they cancel each other.
hence begin mathsize 12px style contour integral B times d l space equals space 0 end style
Answered by Thiyagarajan K | 10 Jan, 2018, 10:19: PM
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