Home
Class 12
PHYSICS
What should be the rate of variation of ...

What should be the rate of variation of current in self inductance 1H to generate induced emf equal to 1V?

A

Less than 1 A/s

B

1 A/s

C

2 A/s

D

More than 2 A/s

Text Solution

Verified by Experts

The correct Answer is:
B
Induced emf `|e|=L(dl)/(dt)`
`therefore1=1xx(dl)/(dt)`
or `(dl)/(dt)=1A//s`
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET 08

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER 1 OBJECTIVE TYPE|50 Videos

  • PRACTICE SET 10

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER 1 (PHYSICS & CHEMISTRY)|50 Videos

Similar Questions

Explore conceptually related problems

Induced emf and self inductance

When a rate of change of current in a circuit is unity, the induced emf is equal to

A coil of self inductance 2H carries a 2A current If direction of current is reversed in 1 sec., then induced emf in it :-

A coil of self inductance 4H carries a 10 A current. If direction of current is reversed in 2 sec, then induced emf in it

The current in a coil of inductance 5H decreases at the rate of 2A//a . The induced e.m.f. is

If the rate of change of current of 1A/s in one coil, induced an emf of 1 V in the neighbouring coil, the mutual inductance of two coils is

The value of self inductance of a coil is 5H. The value of current changes from 1A to 2A in 5 sec., then value of induced emf in it :-

At the instant when the current in an inductor magnitude of the self-induced emf is 0.0640 A//s , the magnitude fo the self- induced emf is 0.0160 V . (a) What is the inductance of the inductor? (b) If the inductor is a solenoid with 400 turns, what is the average magnetic flux through each turn when the current is 0.720A ?

If the rate of change of current is 1A per second in one coil induces an emf of 2 V in the neighbouring coil, the mutual inductance of two coils is

The current in a coil decreases from 1 A to 0.2 A. In 10 sec. Calculate the coefficient of self inductance. If induced emf is 0.4 volt .

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 09-PAPER 1 (PHYSICS & CHEMISTRY)
  1. In the circuit given below, the ameter and voltmeter are ideal measuri...

    Text Solution

    |

  2. When the road is dry and the coefficient of friction is mu, the maximu...

    Text Solution

    |

  3. What should be the rate of variation of current in self inductance 1H ...

    Text Solution

    |

  4. The potential of a large liquid drop when eight liquid drops are combi...

    Text Solution

    |

  5. If the wavelength of incident light changes from 400 nm to 300 nm, the...

    Text Solution

    |

  6. A hollow cylinder has a charge qC within it. If phi is the electric fl...

    Text Solution

    |

  7. A point is situated at 6.5 cm and 6.65 cm from two coherent sources. F...

    Text Solution

    |

  8. The binding energy of deuteron is 2.2 MeV and that of .(2)^(4)He is 28...

    Text Solution

    |

  9. In an n-p-n transistor, the collector current is 10 mA. If 90% of the ...

    Text Solution

    |

  10. Two equal vector have a resultant equal to either of them, then the an...

    Text Solution

    |

  11. In the following network of 5 branches, the respective current are l(1...

    Text Solution

    |

  12. Balmer gave an equation for wavelength of visible radiation of H-spect...

    Text Solution

    |

  13. A radioactive substance has an average life of 5 hours. In a time of 5...

    Text Solution

    |

  14. A solid sphere of radius R has moment of inertia l about its diameter....

    Text Solution

    |

  15. If the angle between the vectors A and B is theta, the value of the p...

    Text Solution

    |

  16. By sucking a straw a student can reduce the pressure in his lungs to 7...

    Text Solution

    |

  17. A stretched sonometer wire is in unison with a tuning fork. When lengt...

    Text Solution

    |

  18. The displacement y in cm is given in terms of time t sec by the equati...

    Text Solution

    |

  19. Two wires of same material of length l and 2l vibrate with frequencies...

    Text Solution

    |

  20. Two solid pieces, one of steel and the other of aluminium when immerse...

    Text Solution

    |