Physics-
General
Easy

Question

An infinitely long conductor has a circular loop as shown in the figure. A current of 5A flows through the conductor. Find the radius of loop if the intensity of magnetic field at its centre is 4.1 cross times 1 0 to the power of negative 2 end exponent T

  1. 10–2 metre    
  2. 8 cross times 1 0 to the power of negative 2 end exponent metre    
  3. 9 cross times 1 0 to the power of negative 2 end exponent metre    
  4. 1 0 to the power of negative 4 end exponent metre    

The correct answer is: 1 0 to the power of negative 4 end exponent metre

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