Physics-
General
Easy

Question

A wire is bent in the form of a circular arc with a straight portion AB If the current in the wire is i, then the magnetic induction at O is

  1. fraction numerator mu subscript 0 end subscript i over denominator 2 pi r end fraction left parenthesis t a n invisible function application ϕ right parenthesis    
  2. fraction numerator mu subscript 0 end subscript i over denominator 2 pi r end fraction left parenthesis pi minus ϕ right parenthesis    
  3. fraction numerator mu subscript 0 end subscript i over denominator 2 pi r end fraction left parenthesis pi minus ϕ plus t a n invisible function application ϕ right parenthesis    
  4. fraction numerator mu subscript 0 end subscript i over denominator 2 pi r end fraction left parenthesis pi minus t a n invisible function application ϕ right parenthesis    

The correct answer is: fraction numerator mu subscript 0 end subscript i over denominator 2 pi r end fraction left parenthesis pi minus ϕ plus t a n invisible function application ϕ right parenthesis

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