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A closed coil having 50 turns, area 300c...

A closed coil having 50 turns, area `300cm^(2)`, is rotated from a position where it plane makes an angle of `45^(@)` with a magnetic field of flux density 2.0T to a position perpendlcular to the field in a time of 0.1s. What is the average EMF induced in the coil ?

Answer

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Knowledge Check

  • A coil of area 10 cm^2 has 200 turns. Magnetic field of 0.1 Wb//m^2 is perpendicular to the plane of the coil. The field is reduced to zero in 0.1 s, the induced emf in the coil is

    A
    1V
    B
    0.2V
    C
    2V
    D
    0
  • A coil of area 0.1 m^(2) has 500 turns. After placing the coil in a magnetic field of strength 4 xx 10^(-4)T , it is rotated through 90^(@) in 0.1 s. The average emf induced in the coil is

    A
    0.012 V
    B
    0.05 V
    C
    0.1 V
    D
    0.2 V
  • A coil of 50 turns, each of area 0.12 m^(2) is rotated at a constant speed of 600 revolutioins per minute in a uniform magnetic field of induction 0.02 T about an axis in the plane of the coil and perpendicular to the direction of the field. The maximum emf induced in a coil is

    A
    7.536 V
    B
    0.75 V
    C
    0.075 V
    D
    0.0075 V
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