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General
Easy

Question

A cell is connected between the points A and C of a circular conductor ABCD of centre O with angle AO C equals 6 0 to the power of o end exponent. If B subscript 1 end subscript and B subscript 2 end subscript are the magnitudes of the magnetic fields at O due to the currents in ABC and ADC respectively, the ratio fraction numerator B subscript 1 end subscript over denominator B subscript 2 end subscript end fraction is

  1. 0.2    
  2. 6    
  3. 1    
  4. 5    

The correct answer is: 1

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