Home
Class 12
PHYSICS
A coil of metal wire is kept stationary ...

A coil of metal wire is kept stationary in a non-uniform magnetic field. An e.m.f. Is induced in the coil.

A

enf and current both are induced in the coil.

B

emf is induced but no current flows through the coil.

C

Current flows in the coil but no emf is induced .

D

Neither emf nor electric current in induced in the coil.

Text Solution

Verified by Experts

The correct Answer is:
D
(d ) Coil is kept in non - uniform field and hence distribution of flux will be non - uniform but coil is stationary and hence flux associated with the coil remains constant . No emf is indued and hence no current will flow through the coil . Hence option (d) is correct.
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) B. MULTIPLE CHOICE QUESTIONS|15 Videos

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise COMPETITION FILE JEE (MAIN) & OTHER STATE BOARDS FOR|26 Videos

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise Revision Exercises (Nuumerical problems )|18 Videos

  • ATOMS

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos

Similar Questions

Explore conceptually related problems

State whether the following statement are true of false giving reason in brif : (a) The dimension of (h//e) is the same as that of magnetic flux phi . (b) The dimensions of electric and magnetic flux are same. (c ) A coil or a metal wire is kept stationary in a non-uniform magnetic field. An e.m.f. is induced in the coil. (d) An e.m.f. can be induced between the two ends of a straingth copper wire when it is moved through a magnetic field.

A: When a conducting loop is kept stationary in a non-uniform magnetic field an emf is induced. R: As per Faraday's law, whenever flux changes, an emf is induced.

A metallic loop is placed in a non-uniform steady magnetic field. Will an emf be induced in the loop?

Asseration: The induced emf in a conducting loop of wire will be non zero when it rotates in a uniform magnetic field. Reason: The emf is induced due to change in magnetic flux.

At which position of the plane of the rotating coil with the direction of magnetic field the e.m.f induced in the coil is maximum ?

An emf induced in a coil rotating in a uniform magnetic field is given by

Shows a closed coil ABCL moving in a uniform magnetic field B with a velocity v . Find (a) emf induced in the coil. (b) emf induced in curve part ACB and straight AB as vev(L) xx vec(B)

MODERN PUBLICATION-ALTERNATING CURRENT -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) A. (MUTIPLE CHOICE QUESTIONS)
  1. A constant current of magnitude sqrt(2) A is flowing through a resisto...

    Text Solution

    |

  2. Select possible correct option for a circuit with net reactance zero.

    Text Solution

    |

  3. Series LCR circuit is connected to an AC source of angular frequency o...

    Text Solution

    |

  4. An electric bulb is rated to give correct brightness at 24 V DC. It is...

    Text Solution

    |

  5. An inductor in connected to an AC source . Magnetic field energy store...

    Text Solution

    |

  6. A resistance of 300 Omega is connected in series with inductor of self...

    Text Solution

    |

  7. A circuit has a self inductance of 1H and carries a current of 2A. To ...

    Text Solution

    |

  8. In an LCR circuit, the voltages across the components are V(L) , V(C) ...

    Text Solution

    |

  9. An AC source of variable frequency f is connected to an LCR series cir...

    Text Solution

    |

  10. A coil and a bulb are connected in series with a dc source, a soft iro...

    Text Solution

    |

  11. A bulb and an air-cored coil are connected in series with a 20 V DC so...

    Text Solution

    |

  12. Frequency of AC source is continuously increased, impedance of LCR ser...

    Text Solution

    |

  13. Power factor of an ideal choke coil (i.e. R = 0) is

    Text Solution

    |

  14. At resonance, the value of the power factor in an LCR series circuit i...

    Text Solution

    |

  15. In an LCR circuit, the resonating frequency is 500 kHz. If the value o...

    Text Solution

    |

  16. L,C and R represent the physical quantities inductance, capacitance an...

    Text Solution

    |

  17. A coil of metal wire is kept stationary in a non-uniform magnetic fiel...

    Text Solution

    |

  18. An L-C-R series circuit with R=100Omega is connected to a 200V, 50Hz a...

    Text Solution

    |

  19. A capacitor having capacitance 2 muF is charged to a potential differe...

    Text Solution

    |

  20. In the series L-C-R circuit shown in the figure, the rms voltage acros...

    Text Solution

    |