Home
Class 12
PHYSICS
When the current changes from +2 A to –2...

When the current changes from `+2 A to –2A` in 0.05 second, an e.m.f. of 8 V is induced in a coil. The coefficient of self - induction of the coil is

A

0.4 H

B

0.8 H

C

0.1 H

D

0.2 H

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4| Section A (Prevous Years Problems )|28 Videos

  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos

  • ELECTRO MAGNETIC WAVES

    MOTION|Exercise EXERCISE - 3 (SECTION - B)|8 Videos

Similar Questions

Explore conceptually related problems

When the current changes from +2A to -2A in 0.05 second, an e.m.f. of 8V is induced in a coil. The coefficient of self-induction of the coil is

When the current changes from +2A to -2A in 0.5 second an emf of 8V is induced in a coil. The coefficient of selfinduction of the coil is

When the current changes from +2A to -2A in 0.05s , and emf of 8B is induced in a coil. The coefficient of self-induction of the coil is

When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 volt is induced in the coil. The coefficient of self induction of the coil is -

When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 volt is induced in the coil. The coefficient of self induction of the coil is -

When the current in a coil changes from 2A to 4A in 0.05 sec, the e.m.f. developed in the coil is 8V. The coefficent of self induction of the coil is

In a coil, the current increases from 0 to 6 A in 0.4 s. If an induced of e.m.f of 15V is produced in the coil, then the coeffiecient of self-induction of the coil will be

When a current changes from 2A to 4A in 0.05 sec . In a coil , induced emf is 8 V . The self inductance of coil is :

In an inductance coil the current increases from zero to 6 ampere in 0.3 second by which an induced e.m.f. of 60 volt is produced in it. The value of coefficient of self-induction of coil is

MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-4| Section B (Prevous Years Problems )
  1. The core of any transformer is laminated so as to

    Text Solution

    |

  2. Two coil are placed close to each other. The mutual inductance of the ...

    Text Solution

    |

  3. When the current changes from +2 A to –2A in 0.05 second, an e.m.f. of...

    Text Solution

    |

  4. A coil having n turns and resistance R Omega is connected with a galva...

    Text Solution

    |

  5. In a uniform magneitc field of induced B a wire in the form of a semic...

    Text Solution

    |

  6. A metal conductor of length 1m rotates vertically about one of its end...

    Text Solution

    |

  7. A coil of inductance 300mh and resistance 2Omega is connected to a sou...

    Text Solution

    |

  8. One conducting U tube can slide inside another as shown in figure, mai...

    Text Solution

    |

  9. The flux linked with a coil at any instant 't' is given by phi = 10t^(...

    Text Solution

    |

  10. In an AC generator, a coil with N turns, all of the same area A and to...

    Text Solution

    |

  11. An inductor (L = 100 mH), a resistor (R = 100Omega) and a battery (E =...

    Text Solution

    |

  12. An ideal coil of 10H is connected in series with a resistance of 5(Ome...

    Text Solution

    |

  13. Two coaxial solenoids are made by winding thin insulated wire over a p...

    Text Solution

    |

  14. An inductor of inductance L=400mH and resistors of resistances R(1)=2 ...

    Text Solution

    |

  15. In the circuit shown below, the key K is closed at t =0. The current t...

    Text Solution

    |

  16. A rectangular loop has a sliding connector PQ of length l and resistan...

    Text Solution

    |

  17. A fully charged capacitor C with initial charge q(0) is connected to a...

    Text Solution

    |

  18. A horizontal straight wire 20 m long extending from east to west falli...

    Text Solution

    |

  19. A boat is moving due east in a region where the earth's magnetic field...

    Text Solution

    |

  20. A coil is suspended in a uniform magnetic field, with the plane of the...

    Text Solution

    |