Home
Class 12
PHYSICS
When a coil is rotated in a magnetic fie...

When a coil is rotated in a magnetic field, with steady speed, then

A

no e.m.f. is induced

B

a periodic e.m.f. is induced

C

unidirectional e.m.f. is induced

D

multidirectional e.m.f. is induced

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos
  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

Similar Questions

Explore conceptually related problems

Induced emf produced in a coil rotating in a magnetic field will be maximum when the angle between the axis of coil and direction of magnetic field is

Assertion (A) : An alternator is machine which converts mechanical energy into electrical energy. Reason (R) : When a coil rotates in a magnetic field an e.m.f. is induced in it.

An emf induced in a coil rotating in a uniform magnetic field is given by

For a coil rotating in a uniform magnetic field, in which position of the coil is the emf induced in the maximum? What is the magnetic flux through the coil in this position?

A rectangular coil of wire has dimensions 0.2 m xx 0.1 m . The coil has 2000 turns . The coil rotates in a magnetic field about an axis parallel to its length and peroendicular to the magnetic field fo 0.2 wb m^(-2) . The speed of rotation of the coil (ii) the instantaneous value of induced emf when the plane of the coil has rotated through an angle of 30 ^(@) from the initial position .

When a conductor is moved in a steady magnetic field or is kept in a changing magnetic field, the currents developed in it are called as

When a current carrying coil is placed in a uniform magnetic field with its magnetic moment anti-parallel to the field.

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. The magnitude of induced e.m.f. in a conductor, depends upon

    Text Solution

    |

  2. Faraday's law are consequence of conservation

    Text Solution

    |

  3. When a coil is rotated in a magnetic field, with steady speed, then

    Text Solution

    |

  4. The induced emf produced when a magnet is inserted into a coil does no...

    Text Solution

    |

  5. If a straight conductor is moved with a uniform velocity at right angl...

    Text Solution

    |

  6. If a conductor is rotating about its one end in a uniform magnetic fie...

    Text Solution

    |

  7. The direction of the induced e.m.f. is determined by

    Text Solution

    |

  8. The phenomenon of electromagnetic induction was discovered by

    Text Solution

    |

  9. Magnetic flux through a coil depends upon

    Text Solution

    |

  10. If any surface is parallel to magnetic lines of forces, then magnetic ...

    Text Solution

    |

  11. Negative sign appearing in Faraday's law of electromagnetic induction ...

    Text Solution

    |

  12. A magnet is moved towards a coil (i) quickly (ii) slowly, then the ind...

    Text Solution

    |

  13. A coil is being moved towards a stationary magnet (i) rapidly (ii) slo...

    Text Solution

    |

  14. When a magnet is moved with its south pole towards the coil, then the ...

    Text Solution

    |

  15. When a magnetic is moved with its N pole away from the coil, then the ...

    Text Solution

    |

  16. Which of the following phenomenon makes use of electromagnetic inducti...

    Text Solution

    |

  17. Induced emf can be produced by

    Text Solution

    |

  18. A copper rod moves parallel to the horizontal direction. The emf. Indu...

    Text Solution

    |

  19. The direction of induced e.m.f. during electromagnetic induction is gi...

    Text Solution

    |

  20. Lenz's law is a consequence of law of conservation of

    Text Solution

    |