Home
Class 12
PHYSICS
The primary and secondary coils of a tra...

The primary and secondary coils of a transmformer have `50` and `1500` turns respectively. If the magnetic flux `phi` linked with the primary coil is given by `phi=phi_(0)+4t`, where `phi` is in weber, `t` is time in second and `phi_(0)` is a constant, the output voltage across the secondary coil is

A

`90V`

B

`120V`

C

`220V`

D

`30V`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ATOMIC PHYSICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Atomic Physics|39 Videos
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-ALTERNATING CURRENT AND ELECTROMAGNETIC WAVES-All Questions
  1. The velocity of electromagnetic radiatior in a medium of permittivity ...

    Text Solution

    |

  2. A transformer is used to light a 100 W and 110 V lamp from a 220V main...

    Text Solution

    |

  3. The primary and secondary coils of a transmformer have 50 and 1500 tur...

    Text Solution

    |

  4. What is the value of inductance L for which the current is a maximum i...

    Text Solution

    |

  5. A coil of inductive reactance 31 Omega has a resistance of 8 ohm. It i...

    Text Solution

    |

  6. The core of any transformaer is laminated so as to

    Text Solution

    |

  7. if lamda(v),lamda(x) and lamda(m) represent the wavelengths of visible...

    Text Solution

    |

  8. In a circuit L, C and R are connected in series with an alternating vo...

    Text Solution

    |

  9. Which of the following are not electromagnetic waves ?

    Text Solution

    |

  10. For a series L C R circuit, the power loss at resonance is

    Text Solution

    |

  11. Which of the following has minimum wavelenght?

    Text Solution

    |

  12. The velocity of electromagnetic wave is along the direction of

    Text Solution

    |

  13. What is the cause of "Green house effect"?

    Text Solution

    |

  14. In a certain region of space electric field E and magnetic field B are...

    Text Solution

    |

  15. The reactance of a capacitor of capacitance C is X. If both th frequen...

    Text Solution

    |

  16. A wire of reistance R is connected in series with an inductor of rea...

    Text Solution

    |

  17. In a circuit inductance L and capacitance C are connected as shown in...

    Text Solution

    |

  18. The electromagnetic radiations are caused by

    Text Solution

    |

  19. Ozone layer blocks the radiaitons of wave length

    Text Solution

    |

  20. A step up transformer operates on a 230 V line and a load current of 2...

    Text Solution

    |