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Grade: 12
        A rod of lenght L,along east-west direction is dropped from a height H. If B be the magnetic field due to earth at that place and angle of dip is delta,then what is the magnitude of induced emf across two end of the rod when the rod reaches the earth?
one year ago

Answers : (2)

Timir Patel
38 Points
							
given:- 
    B is the magneetic field and X is the angle of dip 
    then horizontal magnetic field is BcosX
    length of rod is L
    velocity of the rod falling is (2gH)½ 
      induced emf is = Blv = Bcosx.L.(2gH)1/2 
 
one year ago
Adarsh sharma
11 Points
							When a rod falls,it cuts the horizontal component of earth`s magnetic field.  As a result of which change in magnetic flux takes place and emf is induced.      e=BlvSince, u=0          a =+g        As  v=u+gt              v= gt        e = Blgt       So e is directly proportional to the time
						
8 months ago
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