Home
Class 12
PHYSICS
A coil having an area 2m^(2) is placed i...

A coil having an area `2m^(2)` is placed in a magnetic field which changes from `1 Wb//m^(2)` to `4Wb//m^(2)` in an interval of `2` second. The average e.m.f. induced in the coil will be

A

4 volt

B

3 volt

C

2 volt

D

1 volt

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-3 (Assertion & Reasoning)|18 Videos

  • ELECTRO MAGNETIC INDUCTION

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

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-1|72 Videos

  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos

  • ELECTRO MAGNETIC WAVES

    MOTION|Exercise EXERCISE - 3 (SECTION - B)|8 Videos
MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-2 (Objective problems (Analytical questions))
  1. When the current through a solenoid increases at a constant rate, the ...

    Text Solution

    |

  2. According to Faraday's law of electromagnetic induction

    Text Solution

    |

  3. A coil having an area 2m^(2) is placed in a magnetic field which chang...

    Text Solution

    |

  4. A conducting loop is placed in a uniform magnetic field with its plane...

    Text Solution

    |

  5. Two co-axial solenoids shown in figure. If key of primary suddenly ope...

    Text Solution

    |

  6. Manetic flux through a coil is changes with respect to time then emf i...

    Text Solution

    |

  7. The current flows in a circuit as shown below . If a second circuit is...

    Text Solution

    |

  8. Two identical circuit coils A and B are placed parallel to each other ...

    Text Solution

    |

  9. To induce an e.m.f. in a coil, the linking magnetic flux

    Text Solution

    |

  10. A coil of resistance 10 Omega and 1000 turns have the magnetic flux li...

    Text Solution

    |

  11. One coil of resistance 40 Omega is connected to a galvanometer of 16 O...

    Text Solution

    |

  12. A flexible wire bent in the form of a circle is placed in a uniform ma...

    Text Solution

    |

  13. A short bar magnet passes at a steady speed right through a long solen...

    Text Solution

    |

  14. A square loop of side 22 cm is changed to a circle in time 0.4 sec wit...

    Text Solution

    |

  15. The magnetic flux in a coil of 100 turns increase by 12 xx10^(3) Maxw...

    Text Solution

    |

  16. Which of the following can produce maximum induced emf?

    Text Solution

    |

  17. A solenoid has an inductance of 10 henty and a resistance of 2 ohm. It...

    Text Solution

    |

  18. An inductance coil have the time constant 4 sec, if it is cut into two...

    Text Solution

    |

  19. Which statement is correct from following (a) Inductor store ener...

    Text Solution

    |

  20. Two coils are made of copper wires of same length in the first coil t...

    Text Solution

    |