Home
Class 12
PHYSICS
The magnetic field in a coil of 100 turn...

The magnetic field in a coil of 100 turns and 40 square cm area is increased from 1 Tesla to 6 Tesla in 2 second. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is

A

0.5 V

B

1 V

C

1.5 V

D

2 V

Text Solution

Verified by Experts

The correct Answer is:
B
`e=nA(dB)/(dt)=1V`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos

  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

Similar Questions

Explore conceptually related problems

A 50 turns circular coil has a radius of 3cm , it is kept in a magnetic field acting normal to the area of the coil. The magnetic field B increased from 0.10 tesla to 0.35 tesla in 2 milliseconds . The average induced e.m.f. in the coil is

A student peddles a stationary bicycle. The pedals are connected to a coil of 100 turns and area 0.1 m^(-2) . The coil is placed in a uniform magnetic field of 10^(-2) T , perpendicular to the axis of rotation of the coil. What is the maximum voltage generated in the coil if the coil rotates at 60 revolution per minute?

A rectangular coil of 20 turns and area of cross-section 25 cm^(2) has a resistance of 100 ohm . If a magnetic field which is perpendicular to the plane of the coil changes at the rate of 1000 telsa per second, the current in the coil is

A magnetic field of flux density 10 T acts normal to a coil of 50 turns having 20 cm^(2) area. Find emf induced if the coil is removed from the magnetic field in 0.1 sec.

A circular coil of area 0.2m^(2),250 turns,and resistance 5 Omega is placed in magnetic,field.The magnetic field is directed,perpendicular to the plane of coil and it is,increased from "0.01T" to 0.06 during a ,time interval of 0.25s ,the average,induced current in the coil is

A circular coil of 0.2 m diameter has 100 turns and carries a current of 0.1 ampere. The intensity of magnetic field at the centre of the coil is -

An magnetic field of lux density 10 T acts normal to a coil of 50 turns having 100 cm^(2) area. If coil is removed from magnetic field in 0.1 is emf induced is

A square coil of side 25cm having 1000 turns is rotated with a uniform speed in a magnetic field about axis perpendicular to the direction of the field. At an instant t , the e.m.f. induced in the coil is e=200 sin 100pi t . The magnetic induction is

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. A coil of 100 turns and area 5 square centimetre is placed in a magnet...

    Text Solution

    |

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

    Text Solution

    |

  3. The magnetic field in a coil of 100 turns and 40 square cm area is inc...

    Text Solution

    |

  4. A coil of area 80 square cm and 50 turns is rotating with 2000 revolut...

    Text Solution

    |

  5. The self inductance of a coil is L . Keeping the length and area same,...

    Text Solution

    |

  6. The inductance of a coil in which a current of 0.1 A yields an energy ...

    Text Solution

    |

  7. The inductance of a coil which current increases linearly from zero to...

    Text Solution

    |

  8. The inductance of a coil in which a current of 0.2 A is increasing at ...

    Text Solution

    |

  9. A coil of wire of a certain radius has 600 turns and a self-inductance...

    Text Solution

    |

  10. The flux (in weber) in a closed circuit of a resistance 10Omega varies...

    Text Solution

    |

  11. The mutual inductance of an induction coil is 5H . In the primary coil...

    Text Solution

    |

  12. A 50 Hz ac current of crest value 2 A flows mutual inductance between ...

    Text Solution

    |

  13. A coil resistance 20 Omega and inductance 5 H is connected with a 100 ...

    Text Solution

    |

  14. A coil is placed in a magnetic field directed downward and increasing ...

    Text Solution

    |

  15. A large coil of 10 turns has a resistance 2 Omega. It is kept in a mag...

    Text Solution

    |

  16. A circular coil of radius 5 cm has 500 turns of a wire. The approximat...

    Text Solution

    |

  17. The length l of a wire is shaped to form a coil of 1 turn. This coil h...

    Text Solution

    |

  18. Two coils have the mutual inductance of 0.05 H. The current changes in...

    Text Solution

    |

  19. A coil of copper having 1000 turns is placed in a magnetic field B=4xx...

    Text Solution

    |

  20. A coil of 40 Omega resistance has 100 turns and radius 6 mm us connect...

    Text Solution

    |