Home
Class 12
PHYSICS
The number of turns in the coil of an AC...

The number of turns in the coil of an AC generator is 5000 and the area of the coil is `0.25m^(2)`. The coil is rotated at the rate of 100 cycles/s in a magnetic field of `0.2"Wm"^(-2)`. The peak value of the emf generated is nearly

A

786 kV

B

440 kV

C

220 kV

D

157.1 kV

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE-III|29 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE - I (MAGNETIC FLUX, FARADAY.S LAW, LENZ.S LAW, AC GENERATOR)|26 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE-IB|18 Videos

  • ELECTRIC FIELD AND POTENTIAL

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|26 Videos

  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -II|22 Videos

Similar Questions

Explore conceptually related problems

The number of turns in the coil of an ac genrator is 5000 and the area of the coil is 0.25m^(2) . The coil is rotate at the rate of 100 "cycles"//"sec" in a magnetic field of 0.2W//m^(2) . The peak value of the emf generated is nearly

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B=0.2 Wb//m^(2) . The torque acting on the coil is

An a.c generator consists of a coil of 1000 turns each of area 100 cm^(2) and rotating at an angular speed of 100 rpm in a uniform magnetic field fo 3.6 xx 10^(2) T. Find the peak and r.m.s value of e.m.f induced in the coil.

A boy peddles a stationary bicycle the pedals of the bicycle are attached to a 200 turn coil of area 0.10m^(2) . The coil rotates at half a revolution per second and it is placed in a uniform magnetic field of 0.02 T perpendicular to the axis of rotation of the coil. The maximum voltage generated in the coil is

A circular coil of wire consists of exactly 100 turns with a total resistance 0.20 Omega . The area of the coil is 100 cm^(2) . The coil is kept in a uniform magnetic field B as shown in Fig. 3.212. The magnetic field is increased at a constant rate of 2 Ts^(-1) . Find the induced current in the coil in A .

A closely wound, circular coil with radius 2.40 cm has 800 turns. (a) What must the current in the coil be if the magnetic field at the centre of the coil is 0.0580 T ? (b) At what distance x from the centre of the coil, on the axis of the coil, is the magnetic field half its value at the centre?

A moving coil galvanometer coil has a coil of area A, number of turns N. The radial magnetic field present is B. the moment of inertia of the coil is I about its rotation axis. The torque is applied by the magnetic field on the coil of the galvanometer when current I_(0) passes through it and produces a deflection of pi//2 of the pointer. Then answer the following questions based on the paragraph. Then the value of torsionl constant of the spring is

A person peddles a stationary bicycle the pedals of the bicycle are attached to a 100 turn coil of area 0.10 m^(2) . The coil rotates at half a revolution per second and it is placed in a uniform magnetic field of 0.01 T perpendicular to the axis of rotation of the coil, What is the maximum voltage generated in the coil ?

A rectangular coil of 300 turns has an average area of average area of 25 cmxx10 cm the cooil rotates with a speed of 50 cps in a uniform magnetic field of strength 4xx10^(-2)T about an axis perpendicular of the field. The peak value of the induced e.m.f. is (in volt)

1. A coil of area 2 cm^2 with turns 500 is placed in a magnetic field of 0.5 T with its plane parallel to field. The flux linked with the coil is

AAKASH SERIES-ELECTROMAGNETIC INDUCTION-EXERCISE-II
  1. A coil of 40 Omega resistance, 100 turns and radius 6 mm is connected ...

    Text Solution

    |

  2. A magnetic field of 5xx10^(-5) T is produced at a perpendicular distan...

    Text Solution

    |

  3. The number of turns in the coil of an AC generator is 5000 and the are...

    Text Solution

    |

  4. A circular coil of area 8 m^(2) and number of turns 20 is placed in a ...

    Text Solution

    |

  5. A coil having 500 square loops each of side 10 cm is plance normal to ...

    Text Solution

    |

  6. The Wing span of an aeroplane is 20 metre . It is flying in a fie...

    Text Solution

    |

  7. A small piece of metal wire is dragged across the gap between the pole...

    Text Solution

    |

  8. A copper disc of radius 0.1 m is rotated about its natural axis with 1...

    Text Solution

    |

  9. A wheel with 10 metallic spokes each 0.5 m long is rotated with a spee...

    Text Solution

    |

  10. An E.M.F of 5 V is produced in an inductor, when the current changes a...

    Text Solution

    |

  11. A coil has a self-inductance of 0.05 henry. Find magnitude of the emf ...

    Text Solution

    |

  12. A long solenoid has 1000 truns. When a current of 4A flows through it...

    Text Solution

    |

  13. Calculate the equivalent resistance between the points A and B in Fig.

    Text Solution

    |

  14. If a change in current of 0.01 A in one coil produces a change in ma...

    Text Solution

    |

  15. The current in a coil is changed from 5A to 10A in 10^(-2)s. Then, an ...

    Text Solution

    |

  16. Two coaxial solenods are made by winding thin insulated wire over a pi...

    Text Solution

    |

  17. To emf induced in a secondary coil is 20000 V , when the current bre...

    Text Solution

    |

  18. Two coils of self-inductance 2 mH and 8 mH are placed, so close togeth...

    Text Solution

    |

  19. Two coaxial solenods are made by winding thin insulated wire over a pi...

    Text Solution

    |

  20. A 50 mh coil carries a current of 2 A. the energy stored in joules is

    Text Solution

    |