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 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

1.158V

B

0.58V

C

0.29V

D

5.8V

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs|33 Videos
  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQs|63 Videos
  • CURRENT ELECTRICITY

    PHYSICS GALAXY - ASHISH ARORA|Exercise All Questions|389 Videos
  • ELECTROSTATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numberical Problems|73 Videos

Similar Questions

Explore conceptually related problems

A coil of area 80 square cm and 50 turns is rotating with 2000 revolution per minut about an axis perpendicular to a magnetic field field of 0.05 Telsa. The maximum value of the e.m.f. developed in it is

A coil of N turns and area A is rotated at the rate of n rotations per second in a magnetic field of intensity B, the magnitude of the maximum magnetic flux will be __

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) Explain the meaning of the term mutual inductance. Consider two concentric circular coils, one radius r_(1) and the other of radius r_(2)(r_(1) lt r_(2)) placed coaxially with centres coinciding with each other. Obtain the expression for the mutual inductance of the arrangement. (b) 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 rectangular coil has 60 turns and its length and width is 20 cm and 10 cm recpectively . The coil rotates at a speed of 1800 rotation per minute in a uniform magnetic field of 0.5 T about its one of the diameter. The maximum induced emf will be :-

A circular coil of one turn of radius 5.0cm is rotated about a diameter with a constant angular speed of 80 revolutions per minute. A uniform magnetic field B=0.0IT exists in a direction perpendicular to the axis of rotation, the maximum emf induced, the average emf induced in the coil over a long period and the average of the squares of emf induced over a long period is

PHYSICS GALAXY - ASHISH ARORA-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-Numerical MCQs
  1. The figure-5.298 shows a specific RL circuit, the time constant for th...

    Text Solution

    |

  2. A circular ring of diameter 20cm has a resistance 0.01Omega How much c...

    Text Solution

    |

  3. In the adjoining AC circuit the voltmeter whose reading will be zero a...

    Text Solution

    |

  4. A square loop of side as and a straight long wire are placed in the sa...

    Text Solution

    |

  5. In the adjoining figure the impedence of the circuit will be

    Text Solution

    |

  6. In figure, the switch is in the position 1 for long time, then the sw...

    Text Solution

    |

  7. When an ac source of emfe=E(0) sin (100 t) is connected across a circu...

    Text Solution

    |

  8. In the part of a circuit branch shown in figure-5.304 the potential di...

    Text Solution

    |

  9. A circular coil of mean radius of 7 cm and having 4000 turns Is rotate...

    Text Solution

    |

  10. Initially the switch is in positions 1 for as long time then shifted t...

    Text Solution

    |

  11. Shows a square loop having 100 turns, an area of 2.5 xx10^(-3) m^2 an...

    Text Solution

    |

  12. Two coils have a mutual inductance 0.005 H. The current changes in the...

    Text Solution

    |

  13. Find the current passing through battery immediately after key (K) is ...

    Text Solution

    |

  14. A square wire loop of 10.0 cm side lies at right angles to a uniform m...

    Text Solution

    |

  15. A rectangular loop of sides a and b is placed in xy-placed. A uniform ...

    Text Solution

    |

  16. In the circuit shown the key (K) is closed at t=0, the current through...

    Text Solution

    |

  17. A long straight wire is parallel to one edge of a rectangular loop as ...

    Text Solution

    |

  18. A constant voltage is applied to a series R-L circuit by closing the s...

    Text Solution

    |

  19. A loop shown in the figure is immersed in the varying magnetic field B...

    Text Solution

    |

  20. Figure shows an isosceles triangle wire frame with apex angle equal to...

    Text Solution

    |