Home
Class 12
PHYSICS
in a step-up transformer, the turn ratio...

in a step-up transformer, the turn ratio is `1:2` leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage devloped in the secondary would be

A

20V

B

30V

C

40V

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D

Zero, A transformer does not work on D.C.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 16|30 Videos
  • ELASTICITY

    MARVEL PUBLICATION|Exercise Test Your Grasp - 5|15 Videos
  • ELECTRONS AND PHOTONS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 17|15 Videos

Similar Questions

Explore conceptually related problems

in a step-up transformer, the turn ratio is 1:2A leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage devloped in the secondary would be

In a step up transformer, the turn ratio is 3 : 2. A battery of EMF 4.5V is connected across the primary windings of transformer. The voltage developed in the secondary would be:

A step up transformer has turn ratio 10:1 . A cell of e.m.f 2 volts is fed to the primary . Secondary voltage developed is :

In a step up transformer, the turn ratio is 1:10. A resistance of 200 Omega connected across the secondary draws a current of 0.5 A. What is the primary voltage?

In a step-up transformer the turn ratio is 1:10 . A resistance of 200 ohm connected across the secondary is drawing a current of 0.5A . What is the primary voltage and current?

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

For a step-up transformer,the turns ratio is 3 and its efficiency is 0.75. The current flowing in the primary coil is 2A and the voltage applied to it is 100V . Then the voltage and the current flowing in the secondary coil are ............respectively :-

In a transformer the transformation ratio is 0.3. If 220 V ac is fed to the primary, then the voltage across the secondary is

MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
  1. in a step-up transformer, the turn ratio is 1:2 leclanche cell (e.m.f....

    Text Solution

    |

  2. A coil having an area of 2m^(2) is placed in a magnetic field which ch...

    Text Solution

    |

  3. A straight conductor of length 2 is moves a velocity of 2 m//s, in a m...

    Text Solution

    |

  4. The magnetic flux passing perpendicular to the plane of a coil given b...

    Text Solution

    |

  5. Two identical circular loops of metal wire are lying on a table withou...

    Text Solution

    |

  6. A telegraph wire of length 2500m, is kept in E-W direction, at a heigh...

    Text Solution

    |

  7. When the current in a coil changes from 2A to 4A in 0.05 sec, the e.m....

    Text Solution

    |

  8. Two coil A and B are placed in a circuit. When current changes by 8 Am...

    Text Solution

    |

  9. Two coils P and S have a mutual inductance of 5 xx 10^(-3)H. If the cu...

    Text Solution

    |

  10. The primary and secondary voltage of an ideal step down transformer ar...

    Text Solution

    |

  11. A step down transformer has a turn ratio of 20 : 1. If 8 volt are deve...

    Text Solution

    |

  12. A step down transformer of efficiency 80% is used on a 1000V line to d...

    Text Solution

    |

  13. A coil 10 turns and area 10^(-2)m^(2) rotates in a magnetic field of 0...

    Text Solution

    |

  14. An alternating e.m.f. is given by E=10 cos omega t. If the frequency i...

    Text Solution

    |

  15. In an A.C. Circuit, the current is given by I=6 sin(200 pi t+(pi)/6)...

    Text Solution

    |

  16. An alternating e.m.f. given by e=200 sin 50 t is applied to a circuit ...

    Text Solution

    |

  17. An alternating voltage is represented by V=80 sin(100 pi t)cos(100 p...

    Text Solution

    |

  18. In an A.C. circuit, E=100 sin (500 t) volt and I=1000 sin(500 t +(pi)/...

    Text Solution

    |

  19. In an A.C. circuit, a resistance R=40 Omega and an inductance L are c...

    Text Solution

    |

  20. The inductance of a coil is 10 H. What is the ratio of its reactance w...

    Text Solution

    |

  21. For tuning radio and T.V. circuits, series resonance circuits are used...

    Text Solution

    |