Home
Class 12
PHYSICS
A circular coil of mean radius of 7 cm a...

A circular coil of mean radius of 7 cm and having 4000 turns is rotated at the rate of 1800 rev/min in the earth's magnetic field(B=0.5 gauss), the maximum emf induced in coil will be

A

`2.158 V`

B

`2.58`V

C

`2.29`V

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise IMPECCABLE|52 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise ENABLE|50 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-G|10 Videos
  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|89 Videos

Similar Questions

Explore conceptually related problems

A circular coil of mean radius of 7 cm and having 4000 turns Is rotate at the rate of 1800 revolution per minute in the earth 's magnetic field (B=0.5 gauss), the maximum e.m.f. induced in coil will be

A circular coil of radius 10 cm "and" 100 turns carries a current 1A. What is the magnetic moment of the coil?

A circular coil of radius 10 cm having 100 turns carries a current of 3.2 A. The magnetic field at the center of the coil is

A rectangular coil of area A , having number of turns N is rotated at 'f' revoluation per second in a uniform magnetic field B , the field being perpendicular to the coil. Prove that maximum emf induced in the coil is 2pifNBA .

A coil of cross-sectional area A having n turns is placed in uniform magnetic field B. When it is rotated with an angular velocity omega , the maximum e.m.f. induced in the coil will be :

The radius of a circular coil having 50 turns is 2 cm. Its plane is normal to the magnetic field. The magnetic field changes from 2T to 4T in 3.14 sec. The induced emf in coil will be :-

A wheel with ten metallic spokes each 0.50 m long is rotated with a speed of 120 rev//min in a plane normal to the earth's magnetic field at the place. If the magnitude of the field is 0.4 gauss, the induced e.m.f. between the axle and the rim of the wheel is equal to

A wheel with ten metallic spokes each 0.50 m long is rotated with a speed of 120 rev//min in a plane normal to the earth's magnetic field at the place. If the magnitude of the field is 0.4 gauss, the induced e.m.f. between the axle and the rim of the wheel is equal to

A wheel with ten metallic spokes each 0.50 m long is rotated with a speed of 120 rev//min in a plane normal to the earth's magnetic field at the place. If the magnitude of the field is 0.4 gauss, the induced e.m.f. between the axle and the rim of the wheel is equal to

A circular coil of 200 turns has a radius of 10 cm and carries a current of 2.0 A. (a) Find the magnitude of the magnetic field (vec B) at the centre of the coil. (b) At what distance from the centre along the axis of the coil will the field B drop to half its value at the centre?

VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -EFFICIENT
  1. An e.m.f. of 12 "volts" is induced in a given coil when the current in...

    Text Solution

    |

  2. An electron moves along the line AB which lies in the same plane as a ...

    Text Solution

    |

  3. A circular coil of mean radius of 7 cm and having 4000 turns is rotate...

    Text Solution

    |

  4. The core of any transformer is laminated so as to

    Text Solution

    |

  5. The ratio of secondary to the primary turns in a transformer is 3:2 . ...

    Text Solution

    |

  6. Mutual inductance of two coils depends on their self inductance L(...

    Text Solution

    |

  7. In transformer , power of secondary coil is :

    Text Solution

    |

  8. If a copper ring is moved quickly towards south pole of a powerful sta...

    Text Solution

    |

  9. The magnetic flux through Circuit of resistance R chages by an a...

    Text Solution

    |

  10. A coil of 40 henry inductance is connected in series with a resistance...

    Text Solution

    |

  11. Which of the following is correct for sinusoidal electromagnetic i...

    Text Solution

    |

  12. If number of turns of 70 cm^(2) coil is 200 and it is placed in a m...

    Text Solution

    |

  13. When current in coil is uniformely reduced from 2A to 1A in 1 ms , the...

    Text Solution

    |

  14. If the input voltage of a transformer is 2500 volts and output cur...

    Text Solution

    |

  15. A step up transformer has turn ratio 10:1 . A cell of e.m.f 2 volt...

    Text Solution

    |

  16. A coil of inductance 300 mH and resistance 2Omega is conneted to a sou...

    Text Solution

    |

  17. A Conducting ring of radius 1 meter is placed in an uniform magnetic f...

    Text Solution

    |

  18. The average power is dissipated in a pure inductor is

    Text Solution

    |

  19. The working of dynamo is based on principle of

    Text Solution

    |

  20. D.C motor run of 120 V . If armature current at e(b) = 115 V is 10 ...

    Text Solution

    |