Physics-
General
Easy

Question

A conducting rod of length ­l is moving in a transverse magnetic field of strength B with velocity v. The resistance of the rod is R. the current in the rod is

  1. fraction numerator B l v over denominator R end fraction  
  2. B l v  
  3. Zero   
  4. fraction numerator B to the power of 2 end exponent v to the power of 2 end exponent l to the power of 2 end exponent over denominator R end fraction  

The correct answer is: Zero


    Since the rod is moving in transverse magnetic field, so it will cut no flux passing through the field and hence no induced emf is produced. So, no current will flow through the rod.

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