Q158 / 160 · WBJEE 2015 · Physics

The conducting loop in the form of a circle is placed in a uniform magnetic field with its plane perpendicular to the direction of the field. An emf will be induced in the loop, if

  • A
    it is translated parallel to itself
  • Correct answer
    B
    it is rotated about one of its diameters
  • C
    it is rotated about its own axis which is parallel to the field
  • Correct answer
    D
    the loop is deforned from the original shape

Solution

Whenever, there is a change in the magnetic flux crossing through the loop, an emf induced in it and hence there is an amount of induced current through the loop. If loop is rotated about one of its diameter or the loop is deformed the flux through it varies and causing the emf induced in it.

Hence, the correct answer is options: 'B', 'D'.

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