Home
Class 12
PHYSICS
The primary winding of transformer has 2...

The primary winding of transformer has 200 turns and its secondary winding has 50 turns. If the current in the secondary winding is 40 A, the current in the primary is

A

8000A

B

80A

C

160A

D

10A

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Electromagnetic Induction

    CHETANA PUBLICATION|Exercise EXERCISE|109 Videos

  • Dual Nature of Radiation and Matter

    CHETANA PUBLICATION|Exercise EXERCISE|89 Videos

  • Electrostatics

    CHETANA PUBLICATION|Exercise Exercise|73 Videos

Similar Questions

Explore conceptually related problems

The primary winding of a transformer has 300 turns and its secondary winding has 60. If the current in the secondary winding is 40A, find the current in the primary winding.

The primary coil of a transformer has 100 turns and the secondary coil has 300 turns. If the peak value of the alternating emf applied to the primary coil 150v, what is the peakvalue of the alternating emf obtained across the secondary coil?

The primary of transformer has 5000 turns and works on 400V and 100 Walt. Find the number of turns in the secondary to step down voltage to 100V.

In an ideal transformer, the number of turns in the primary is 120 and that in the secondary is 240. What is the secondary current if the primary current is 6A

The primary of a transformer has 40 turns and works on 100 volt and 100 watt.Find the number of turns in the secondary to step up voltage to 400 V. Also calculate the current in the secondary and primary.

The ratio of the turns in the primary and secondary coils of transformer is1: 9. The ratio of the current in the primary to secondary is

An ideal transformer has 100 turns in the primary and 250 turns in the secondary .The peak value of the ac is 28 V.The r.m.s .secondary voltage is nearest to

In a step up transformer , the transformation ratio is 100. The primary voltage is 200V and input power is 1000 watt.The number of turns in the primary is 100. Calculate the current in the primary

A toroid of 4000 turns has outer radius of 26 cm and inner radius of 25 cm. If the current in the wire is 10 A, calculate the magnetic field of the toroid

The number of turns in the primary and secondary coils of a transformer are 200 and 800 respectively. If the voltage developed across the secondary is 240V, then the potential difference across each turn of the primary will be

CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. A step down transformer of efficiency 80% is used on a 1000V line to d...

    Text Solution

    |

  2. Henry is equivalent to

    Text Solution

    |

  3. The primary winding of transformer has 200 turns and its secondary win...

    Text Solution

    |

  4. A transformer is used to reduce the main supply of 220 V to11 V. If th...

    Text Solution

    |

  5. The ratio of the turns in the primary and secondary coils of transform...

    Text Solution

    |

  6. A current in one coil changes from 5 A to 3 A in 0.2 sec and the co-ef...

    Text Solution

    |

  7. The current in the coil changes from 3A to 6 A in 3sec. If the induced...

    Text Solution

    |

  8. If south pole of the magnet is moved towards the coil then the nearer ...

    Text Solution

    |

  9. The current in the choke coil decreasing at the rate of 3 A//s and cho...

    Text Solution

    |

  10. The phenomenon of producing an induced e.m.f. in a conductor due to th...

    Text Solution

    |

  11. Faraday's laws of electromagnetic induction is related to

    Text Solution

    |

  12. To induce an e.m.f. in a coil, the magnetic flux

    Text Solution

    |

  13. The co-efficient of self induction of a coil is the ratio of

    Text Solution

    |

  14. The S.I. unit of inductance Henry can be written as

    Text Solution

    |

  15. The number of turns in primary and secondary coil of transformer are 1...

    Text Solution

    |

  16. Lenz's law is in accordance with law of conservation of

    Text Solution

    |

  17. Magnetic flux associated with area element ds kept in magnetic inducti...

    Text Solution

    |

  18. Induced e.m.f. produced in the coil is 4mV. What is the change in flux...

    Text Solution

    |

  19. Foucault's current is also

    Text Solution

    |

  20. What is SI unit of magnetic flux density?

    Text Solution

    |