Physics-
General
Easy

Question

A semi circular current carrying wire having radius R is placed in x-y plane with its centre at origin 'O' There is non-uniform magnetic field stack B with rightwards arrow on top equals fraction numerator B subscript o end subscript x over denominator 2 R end fraction stack k with ˆ on top (here B subscript o end subscript is +ve constant) is existing in the region. The magnetic force acting on semi circular wire will be along

  1. -x-axis    
  2. + y-axis    
  3. -y-axis    
  4. +x-axis    

The correct answer is: -x-axis

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