Physics-
General
Easy

Question

An elastic circular wire of length l carries a current I. It is placed in a uniform magnetic field stack B with rightwards arrow on top (Out of paper) such that its plane is perpendicular to the direction of stack B with rightwards arrow on top. The wire will experience

  1. No force    
  2. A stretching force    
  3. A compressive force    
  4. A torque    

The correct answer is: A stretching force


    On applying Fleming’s left hand rule

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