Physics-
General
Easy

Question

Net magnetic field at the centre of the circle O due to a current carrying loop as shown in figure is (q < 180°)

  1. zero    
  2. perpendicular to paper inwards    
  3. perpendicular to paper outwards    
  4. is perpendicular to paper inwards if q £ 90° and perpendicular to paper outwards if 90°£q    

The correct answer is: perpendicular to paper outwards

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