Home
Class 12
PHYSICS
An a.c. voltage of 200 V is applied to t...

An a.c. voltage of 200 V is applied to the primary of a transformer and voltage of 2000 V is obtained from the secondary . Calculate the ratio of currents through primary and secondary coils.

Text Solution

Verified by Experts

Here, `E_(P) = 200 V, E_(s) = 2000 V, (I_(P))/(I_(s)) = ?`
`(I_(P))/(I_(s)) = (E_(s))/(E_(P)) = (2000)/(200) = 10`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise JEE Mains Ad..(Multiple Choice Question)|1 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Multiple Choice Questions|1 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Value Based Questions|2 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Exercise|191 Videos
  • ELECTROMAGNETIC WAVES

    PRADEEP|Exercise II Focus multiple choice question|5 Videos

Similar Questions

Explore conceptually related problems

In a transformer, the number of turns in primary coil and secondary coil are 5 and 4 respectively. If 240 V is applied on the primary coil, then the ratio of current in primary and secondary coil is

A transformer has an efficiency of 80%. It works at 4 kW, 100 V. If the secondary voltage is 240 V, Calculate the primary and secondary currents.

In a step up transformer, the input voltage is 300 V and the output voltage is 15 KV. Then the ratio of the number of turns in the primary to that in the secondary is

In a stepup transformer, the ratio of number of turns in primary and secondary coils is 1 : 10 . What voltage will develop in the secondary if the primary is connected to 220 V mains ? If the current drawn from the secondary is 2A, calculate the current through the primary

A transformer has 500 turns in the primary and 1000 turns in its secondary. The primary voltage is 200 V and load in secondary is 100 ohm. Calculate the current in primary assuming it to ideal transformer.

A generator supplies 100 V to the primary - coil of a transformer of 50 turns.If the secondary coil has 500 turns, then the secondary voltage is

200 V AC is applied to primary coil of a transformer and it is found that output current is 8 A and output voltage is 50 V. Assume no energy loss. Find the current in primary coil I ampere.

A current of 5A is flowing at 220V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2200V and 50% of power is lost, then the current in the secondary coil will be –

A transformer has 1500 turns in the primary coil and 1125 turns in the secondary coil. If a voltage of 200V is applied across the primary coil , then the voltage in the secondary coil is :

PRADEEP-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-Exercise
  1. An a.c. source of internal resistance 9000 Omega is to supply current ...

    Text Solution

    |

  2. A transformer with efficiency 80% works at 4 kW and 100 V. If the seco...

    Text Solution

    |

  3. An a.c. voltage of 200 V is applied to the primary of a transformer an...

    Text Solution

    |

  4. A step down transformer converts a voltage of 2000 V inot 200 V in the...

    Text Solution

    |

  5. A square of side L meters lies in the x-y plane in a region, where the...

    Text Solution

    |

  6. A loop made of straight edegs has six corners at A(0,0,0), B(L, O,0) C...

    Text Solution

    |

  7. A cylindrical bar magnet is rotated about its axis (Figure). A wire is...

    Text Solution

    |

  8. There are two coils A and B as shown in Figure. A current starts flowi...

    Text Solution

    |

  9. Same as problem 4 except the coil A is made to rotate about a vertical...

    Text Solution

    |

  10. The self inductance L of a solenoid of length l and area of cross-sect...

    Text Solution

    |

  11. A metal plate is getting. It can be because

    Text Solution

    |

  12. An e.m.f. is produced in a coil, which is not connected to an exteranl...

    Text Solution

    |

  13. The mutual inductance M(12) of coil 1 with respect to coil 2

    Text Solution

    |

  14. A circular coil expands radially in a region of magnetic field and no ...

    Text Solution

    |

  15. If the rms current in a 50 Hz ac circuit is 5 A, the value of the cur...

    Text Solution

    |

  16. An alternating current generator has an internal resistance R(g) and a...

    Text Solution

    |

  17. When a voltage measuring device is connected to a.c. mains the meter s...

    Text Solution

    |

  18. To reduce the resonant frequency in an LCR series circuit with a gener...

    Text Solution

    |

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

    Text Solution

    |

  20. A inductor of reactance 1 Omega and a resistor of 2 Omega are connecte...

    Text Solution

    |