Physics-
General
Easy

Question

The figure shows certain wire segments joined together to form a coplanar loop. The loop is placed in a perpendicular magnetic field in the direction going into the plane of the figure. The magnitude of the field increases with time. I subscript 1 end subscriptandI subscript 2 end subscript are the currents in segment ab and cd. Then,

  1. I subscript 1 end subscript greater than I subscript 2 end subscript    
  2. I subscript 1 end subscript less than I subscript 2 end subscript    
  3. I subscript 1 end subscript is in the direction ba and I subscript 2 end subscript is in the direction cd    
  4. I subscript 1 end subscript is in the direction ab and I subscript 2 end subscript is in the direction dc    

The correct answer is: I subscript 1 end subscript is in the direction ab and I subscript 2 end subscript is in the direction dc


    Due to decrease in crosses (cross times), induced current in outer loop is anticlockwise, i. e. comma from d to c and clockwise in inner loop i. e. comma from a rightwards arrow b

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