Physics-
General
Easy

Question

In the adjacent figure is shown a closed path P. A long straight conductor carrying a current I passes through O and perpendicular to the plane of the paper. Then which of the following holds good?

  1. not stretchy integral subscript P end subscript B. d l equals 0    
  2. not stretchy integral subscript P end subscript B. d l equals mu subscript 0 end subscript I    
  3. not stretchy integral subscript P end subscript B. d l greater than mu subscript 0 end subscript I    
  4. None of these    

The correct answer is: not stretchy integral subscript P end subscript B. d l equals mu subscript 0 end subscript I


    A long straight conductor carrying current I passes through O comma then by symmetry, all points of the circular path are equivalent and hence the magnitude of magnetic field should be same at these points.
    The circulation of magnetic field along the circle is
    not stretchy contour integral B. d l equals mu subscript 0 end subscript I(using Ampere’s law)

    Book A Free Demo

    +91

    Grade*

    Related Questions to study