Home
Class 12
PHYSICS
A wire loop is rotated in magneitc field...

A wire loop is rotated in magneitc field. The frequency of change of direction of the induced e.m.f. is.

A

four times per revolution

B

six times per revolution

C

once per revolution

D

twice per revolution

Text Solution

Verified by Experts

The correct Answer is:
D

twice per revolution
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|25 Videos
  • DUAL NATURE OF MATTER AND RADIATION

    MTG GUIDE|Exercise AIPMT/ NEET MCQs|30 Videos
  • ELECTROMAGNETIC WAVES

    MTG GUIDE|Exercise AIPMT/NEET(MCQs)|15 Videos

Similar Questions

Explore conceptually related problems

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

The cause of induced e.m.f is

when the wire loop is rotated in the magnetic field between the poles of a magnet the direction of emf changes once in every

Choose the correct option: A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each:

When the wire loop is rotated in the magnetic field between the poles of a magnet the frequency of emf is

MTG GUIDE-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS-AIPMT/NEET MCQS
  1. In a circuit, the instantaneous values of alternating current and volt...

    Text Solution

    |

  2. In a coil of resistance 10Omega , the induced current developed by ch...

    Text Solution

    |

  3. A wire loop is rotated in magneitc field. The frequency of change of d...

    Text Solution

    |

  4. A coil of self-inductance L is connected in series with a bulb B and a...

    Text Solution

    |

  5. A thin semicircular conducting ring (POR) of radius r is falling with ...

    Text Solution

    |

  6. A transformer having efficiency of 90% is working on 200 V and 3 kW po...

    Text Solution

    |

  7. A resistance R draws power P when connected to an AC source. If an ind...

    Text Solution

    |

  8. A conducting square frame of side 'a' and a long straight wire carryin...

    Text Solution

    |

  9. A series R-C circuit is connected to an alternating voltage source. Co...

    Text Solution

    |

  10. An electron moves on a straight line path XY as shown. The abcd is a c...

    Text Solution

    |

  11. An inductor 20 mH, a capacitor 100 muF and a resistor 50 Omega are con...

    Text Solution

    |

  12. A small signal voltage V(t)=V(0)sin omegat is applied across an ideal ...

    Text Solution

    |

  13. A long solenoid has 1000 turns. When a current of 4A flows through it,...

    Text Solution

    |

  14. Which of the following combinations should be selected for better turn...

    Text Solution

    |

  15. A uniform magnetic field is restricted within a region of radius r. Th...

    Text Solution

    |

  16. The potential differences across the resistance, capacitance and induc...

    Text Solution

    |

  17. A long solenoid of diameter 0.1 m has 2 xx 10^(4) turns per meter. At ...

    Text Solution

    |

  18. Figure shows a circuit that contains three identical resistors with re...

    Text Solution

    |

  19. The magnetic potential energy stored in a certain inductor is 25mJ, wh...

    Text Solution

    |

  20. An inductor 20 mH, a capacitor 100 muF and a resistor 50 Omega are con...

    Text Solution

    |