Home
Class 12
PHYSICS
Assertion: Faraday's laws are consequenc...

Assertion: Faraday's laws are consequences of conservation of energy.
Reason: In a purely resistive `AC` circuit, the current lags behind the e.m.f. in phase

A

If both the assertion and reason are true and reason is correct explanation of the assertion .

B

If both the assertion and reason are true but reason is not a correct explanation of the assertion .

C

If the assertion is true but the reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C

Faraday's law involve conservation of mechanical energy into electrical energy . This is in accordance with the law of conservation of energy . We also know that in pure resistance, the e.m.f. is in phase with the current .
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2001

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos
  • AIIMS 2003

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

In a purely capcitive circuit, the e.m.f.

Assertion(A): Faraday's laws of electromagnetic induction are consequences of law of conservation of energy. Reason (R): The parameter LR in a L-R circuit has the dimension of time.

Assertion : At resonance, LCR series circuit have a minimum current. Reason : At resonance, in LCR series circuit, the current and e.m.f. are not in phase with each other.

Assertion (A): Lenz's law does not violets the principle of conservation of energy. Reason (R): Induce e.m.f. never opposes the change in magnetic flux that causes the e.m.f.

In an ac circuit, the current lags behind the voltage by pi//3 . The components in the circuit are

The phase relationship between current and voltage in a pure resistive circuit is best represented by

Assertion: An inductance and a resistance are connected in series with an AC circuit. In this circuit the current and the potential difference across the resistance lag behind potential difference across the inductance by an angle pi//2 . Reason: In LR circuit voltage leads the current by phase angle which depends on the value of inductance and resistance both.

In an AC circuit, the current lags behind the voltage by (pi)/(3) .The components in the circuit may be:

Lenz's law violates the principle of conservation of energy. Reason: Induced e.m.f. opposes always the change in magnetic flux responsible for its production.

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2002-PHYSICS
  1. Assertion : Planet is a heavenly body revolving round the sun Reaso...

    Text Solution

    |

  2. Assertion: Coloured spectrum is seen when we look through a muslim clo...

    Text Solution

    |

  3. Assertion (A) : When tiny circular obstacle is placed in the path of l...

    Text Solution

    |

  4. Assertion: The quantity L//R possesses dimensions of time. Reason: T...

    Text Solution

    |

  5. Assertion : In a simple battery circuit the point of lowest potential ...

    Text Solution

    |

  6. Assertion : We use a thick wire in the secondary of a step down transf...

    Text Solution

    |

  7. Assertion: We cannot think of magnetic field configuration with three ...

    Text Solution

    |

  8. Assertion (A) : Thin films such as soap bubble or a thin layer of oil ...

    Text Solution

    |

  9. Assertion : Quasar emits radiowaves more than radio galaxy . Reaso...

    Text Solution

    |

  10. Assertion : S.I. units are logical and coherent . Reason : S.I. syst...

    Text Solution

    |

  11. Assertion : It is difficult to move a cylce along the roda with its...

    Text Solution

    |

  12. Assertion: Faraday's laws are consequences of conservation of energy. ...

    Text Solution

    |

  13. Assertion: The flash of lightening is sees before the sound of thunder...

    Text Solution

    |

  14. Assertion : Blue star is at high temperature than red star. Reason :...

    Text Solution

    |

  15. Assertion : The time-period of pendulu, on a satellite orbiting the ea...

    Text Solution

    |

  16. Assertion : Sterss is the internal force per unit area of a body. ...

    Text Solution

    |

  17. Assertion : In an elastic collision of two billiard balls, the total ...

    Text Solution

    |

  18. Assertion : The earth without its atmosphere would be inhospitably col...

    Text Solution

    |

  19. Statement-1 : In S.H.M., the motion is ‘to and fro’ and periodic. ...

    Text Solution

    |

  20. Assertion : Woollen clothes keep the body warm in winter Reason : Ai...

    Text Solution

    |