Home
Class 12
PHYSICS
A coil having n turns and resistance R O...

A coil having n turns and resistance `R Omega` is connected with a galvanometer of resistance `4R Omega`. This combination is moved in time t seconds from a magnetic field `W_(1)` weber to `W_(2)` weber. The induced current in the circuit is

A

`-(W_(2)-W_(1))/(5 Rnt)`

B

`-(n(W_(2)-W_(1)))/(5 Rnt)`

C

`-((W_(2)-W_(1)))/(Rnt)`

D

`-(n(W_(2)-W_(1)))/(Rt)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise OT|3 Videos
  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise Motional EMI|1 Videos
  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Self Evaluation Test -19|23 Videos
  • ELECTRON, PHOTON, PHOTOELECTRIC EFFECT AND X-RAYS

    ERRORLESS |Exercise Self Evaluation Test|3 Videos

Similar Questions

Explore conceptually related problems

A coil having 'n' turns and resistance R Omgea is connected with a galvanometer of resistance 4R Omega . This combination is moved in time 't' seconds from a magnetic flux phi_(1) . Weber to phi_(2) Weber. The induced current in the circuit is

A resistance of 2 Omega is connected in parallel to a galvanometer of resistance 48 Omega . The fraction of the total current passing through the resistance of 2 Omega is

A resistance of 4 Omega is connected in parallel to a galvanometer of resistance 396 Omega . Find the fraction of the total current passing through the galvanometer and the fraction of the total current passing through the shunt.

One coil of resistance 40 Omega is connected to a galvanometer of 16 Omega resistance . The coil has radius 6mm and turns 100. This coil is placed between the poles of a magnet such that magnetic field is perpendicular to coil. If coil is dragged out then the charge through the galvanometer is 32 muC . The magnetic field is :-

A resistor of resistance R is connected to a cell internal resistance 5 Omega . The value of R is varied from 1 Omega to 5 Omega . The power consumed by R

When a resistance of 100 Omega is connected in series with a galvanometer of resistance R, then its range is V. To double its range, a resistance of 1000 Omega is connected in series. Find the value of R.

An AC generator of 220 V having internal resistance r=10 Omega and external resistance R=100 Omega . What is the power developed in the external circuit?

ERRORLESS -ELECTRO MAGNETIC INDUCTION-SET
  1. A coil having n turns and resistance R Omega is connected with a galva...

    Text Solution

    |

  2. The figure shows four wire loops, with edge length of either L or 2L. ...

    Text Solution

    |

  3. A circular coil and a bar magnet placed nearby are made to move in the...

    Text Solution

    |

  4. A square coil ABCD lying in x-y plane with its centre at origin. A lon...

    Text Solution

    |

  5. A short magnet is allowed to fall from rest along the axis of a horizo...

    Text Solution

    |

  6. The horizontal component of the earth's magnetic field at a place is 3...

    Text Solution

    |

  7. A copper disc of radius 0.1 m rotates about its centre with 10 revolut...

    Text Solution

    |

  8. A coil of Cu wire (radius r, self-inductance L) is bent in two concen...

    Text Solution

    |

  9. In which of the following circuits is the current maximum just after t...

    Text Solution

    |

  10. A small coil is introduced between the poles of an electromagnet so th...

    Text Solution

    |

  11. Two circular coils A and B are facing each other as shown in figure. T...

    Text Solution

    |

  12. A conductuing loop having a capacitor is moving outward from the magne...

    Text Solution

    |

  13. A straight wire of length L is bent into a semicircle. It is moved in ...

    Text Solution

    |

  14. If in a coil rate of change of area is (5meter^(2))/(milli second)and ...

    Text Solution

    |

  15. In series with 20 ohm resitor a 5 henry inductor is placed. To the com...

    Text Solution

    |

  16. Two circular coils P & Q are coaxially & carry currents I1 and I2 resp...

    Text Solution

    |

  17. The phase difference between the flux linkage and the induced e.m.f. i...

    Text Solution

    |

  18. A pair of parallel conducting rails lie at right angle to a uniform ma...

    Text Solution

    |

  19. The magnetic field in the cylindrical region shown in figure increase ...

    Text Solution

    |

  20. An aircraft with a wingspan of 40 m flies a speed of 1080 km hr(1) in ...

    Text Solution

    |

  21. A hundred turns of insulated copper wire are wrapped around an iron cy...

    Text Solution

    |