Home
Class 12
PHYSICS
A coil of N turns and mean cross-section...

A coil of N turns and mean cross-sectional area A is rotating with uniform angular velocity `omega` about an axis at right angle to uniform magnetic field B. The induced emf E in the coil will be

A

`NBA sin omega t`

B

`NB omega sin omega t`

C

`NB//A sin omega t`

D

`NBA omega sin omega t`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise OT|3 Videos
  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise Motional EMI|1 Videos
  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Self Evaluation Test -19|23 Videos
  • ELECTRON, PHOTON, PHOTOELECTRIC EFFECT AND X-RAYS

    ERRORLESS |Exercise Self Evaluation Test|3 Videos

Similar Questions

Explore conceptually related problems

A coil of 1.60 turns of cross-sectional area 250cm^(2) rotates at an angular velocity of 300rad/s about an axis parallel to the plane of the coil in a uniform magnetic field of 0.6 weber/mere .^(2) . What is the maximum EMF induced in the coil. If the coil is connected to a resistance of 2Omega , what is the maximum torque that has to be delivered to maintain its motion.

A coil of metal wire is kept stationary in a non-uniform magnetic field. An e.m.f. Is induced in the coil.

A conducting rod of length l is rotating with constant angular velocity omega about point O in a uniform magnetic field B as shown in the figure . What is the emf induced between ends P and Q ?

A horizontal ring of radius r spins about its axis with an angular velocity omega in a uniform vertical magnetic field of magnitude B . The emf induced in the ring is

ERRORLESS -ELECTRO MAGNETIC INDUCTION-SET
  1. A coil of N turns and mean cross-sectional area A is rotating with uni...

    Text Solution

    |

  2. The figure shows four wire loops, with edge length of either L or 2L. ...

    Text Solution

    |

  3. A circular coil and a bar magnet placed nearby are made to move in the...

    Text Solution

    |

  4. A square coil ABCD lying in x-y plane with its centre at origin. A lon...

    Text Solution

    |

  5. A short magnet is allowed to fall from rest along the axis of a horizo...

    Text Solution

    |

  6. The horizontal component of the earth's magnetic field at a place is 3...

    Text Solution

    |

  7. A copper disc of radius 0.1 m rotates about its centre with 10 revolut...

    Text Solution

    |

  8. A coil of Cu wire (radius r, self-inductance L) is bent in two concen...

    Text Solution

    |

  9. In which of the following circuits is the current maximum just after t...

    Text Solution

    |

  10. A small coil is introduced between the poles of an electromagnet so th...

    Text Solution

    |

  11. Two circular coils A and B are facing each other as shown in figure. T...

    Text Solution

    |

  12. A conductuing loop having a capacitor is moving outward from the magne...

    Text Solution

    |

  13. A straight wire of length L is bent into a semicircle. It is moved in ...

    Text Solution

    |

  14. If in a coil rate of change of area is (5meter^(2))/(milli second)and ...

    Text Solution

    |

  15. In series with 20 ohm resitor a 5 henry inductor is placed. To the com...

    Text Solution

    |

  16. Two circular coils P & Q are coaxially & carry currents I1 and I2 resp...

    Text Solution

    |

  17. The phase difference between the flux linkage and the induced e.m.f. i...

    Text Solution

    |

  18. A pair of parallel conducting rails lie at right angle to a uniform ma...

    Text Solution

    |

  19. The magnetic field in the cylindrical region shown in figure increase ...

    Text Solution

    |

  20. An aircraft with a wingspan of 40 m flies a speed of 1080 km hr(1) in ...

    Text Solution

    |

  21. A hundred turns of insulated copper wire are wrapped around an iron cy...

    Text Solution

    |