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

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.

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 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

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?

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 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.

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.

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

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 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

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

A transformer has 250 volts applied to the primary and gives 4.6V in the secondary. The secondary is connected to a load which draws a current of 5A. The current in the primary is

CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. The mutual inductance between the two coils is 2 xx 10^-2H.Due to the ...

    Text Solution

    |

  2. A step down transformer, connected to mains supply 240V is made to ope...

    Text Solution

    |

  3. The primary winding of a transformer has 300 turns and its secondary w...

    Text Solution

    |

  4. A coil of effective area 10m^2 is placed at right angles to a magnetic...

    Text Solution

    |

  5. The current increases at the rate of 10A s^-1 in the coil of inductan...

    Text Solution

    |

  6. A coil of effective area 4m^2 is placed at right angles to a magnetic ...

    Text Solution

    |

  7. A rectangular coil (0.5 m xx 0.4m) has a resistance of 5Omega . The co...

    Text Solution

    |

  8. A rectangular coil (0.5 m xx 0.4m) has a resistance of 5Omega . The co...

    Text Solution

    |

  9. A coil of area 0.75 m^2 and 1000 turns is kept perpendicular to a magn...

    Text Solution

    |

  10. Find the self-inductance of a circuit in which an e.m.f. of 10V is ind...

    Text Solution

    |

  11. The mutual inductance of a pair of coils is 0.75H. If the current in t...

    Text Solution

    |

  12. A step down transformer has 800 turns in the primary. The supply volta...

    Text Solution

    |

  13. A coil of effective area 2m^2 is placed at right angles to a magnetic ...

    Text Solution

    |

  14. The back e.m.f. induced in an inductive coil is 100 V when the current...

    Text Solution

    |

  15. The coefficient of mutual inductance between a pair of coils is 5mH. F...

    Text Solution

    |

  16. The magnetic flux through a closed circuit is phi= 15t-t+5 Weber. If t...

    Text Solution

    |

  17. The magnetic flux through a spark coil of 1000 turn changes from 1.0 W...

    Text Solution

    |

  18. Magnetic flux in a closed circuit of resistance 20Omega varies with ti...

    Text Solution

    |

  19. A square coil having500 turnseach of side10cm is placed normal to the ...

    Text Solution

    |

  20. The current in one coil increases from 0 mA to 500 mA in 0.1 ms. The ...

    Text Solution

    |