Physics-
General
Easy

Question

The magnetic induction at the point O, if the wire carrying current I is

  1. fraction numerator mu subscript 0 end subscript I over denominator 2 R end fraction    
  2. fraction numerator mu subscript 0 end subscript I over denominator 2 pi R end fraction    
  3. fraction numerator mu subscript 0 end subscript I open parentheses pi to the power of 2 end exponent plus 4 close parentheses to the power of 1 divided by 2 end exponent over denominator 4 pi R end fraction    
  4. fraction numerator mu subscript 0 end subscript I open parentheses pi to the power of 2 end exponent plus 4 close parentheses over denominator 4 pi R end fraction    

The correct answer is: fraction numerator mu subscript 0 end subscript I open parentheses pi to the power of 2 end exponent plus 4 close parentheses to the power of 1 divided by 2 end exponent over denominator 4 pi R end fraction

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