Home
Class 12
PHYSICS
A coil having 200 turns has a surface ar...

A coil having `200` turns has a surface area of `0.15m^(2)`. A magnetic field of strength `0.2T` applied perpendicular to this changes to `0.6T` in `0.4s`, then the induced emf in the coil is __________V.

A

45

B

30

C

15

D

60

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NEET MOCK TEST 4

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos
  • NEET MOCK TEST 8

    NTA MOCK TESTS|Exercise PHYSICS - SINGLE CHOICE|45 Videos

Similar Questions

Explore conceptually related problems

Area of a coil is 0.16m^2 . If the magnetic field through it changes from 0.1 Wb//m^2 to 0.5 Wb//m^2 in 0.02s, then the emf induced in the coil will be-

A coil of area 10 cm^2 has 200 turns. Magnetic field of 0.1 Wb//m^2 is perpendicular to the plane of the coil. The field is reduced to zero in 0.1 s, the induced emf in the coil is

A coil of area 100 cm^(2) has 500 turns. Magnetic field of 0.1 "weber"//"metre"^(2) is perpendicular to the coil. The field is reduced to zero in 0.1 second. The induced e.m.f. in the coil is

A coil of area 0.4m^(2) has 100 turns. A magnetic field of 0.04 Wb m^(-2) is acting normal to the coil surface. If this magnetic field is reduced to zero in 0.01 s, then the induced emf in the coil is

A rectangular coil of 100 turns and size 0.1mxx0.05m is placed perpendicular to a magnetic field of 0.1 T. If the field drops to 0.05 T in 0.05 s, the magnitude of the emf induced in the coil is

A rectangular coil of 25 turns, area of 25cm^(2) and resistance of 4 ohm//turn is placed perpendicular to a varying magnetic field, which changes at the rate of 500 T//s . The induced current in the coil is

A coil of 10 turns and area 4xx10^(-2)m^(2) is placed in a unifrom magnetic field of flux dencity 10^(-2)T .If it is removed completely in 0.5s ,then the induced in the coil is

A closed coil having 50 turns, area 300cm^(2) , is rotated from a position where it plane makes an angle of 45^(@) with a magnetic field of flux density 2.0T to a position perpendlcular to the field in a time of 0.1s. What is the average EMF induced in the coil ?

A rectangular coil of 200 turns and area 100 cm^(2) is kept perpendicular to a uniform magnetic field of induction 0.25 tesla. If the field is reversed in direction in 0.01 second, the average induced emf in the coil is

NTA MOCK TESTS-NEET MOCK TEST 5-PHYSICS - SINGLE CHOICE
  1. In the figure shown below, an ideal gas is carried around the cyclic p...

    Text Solution

    |

  2. One litre of oxygen at a pressure of 1 atm and two litres of nitrogen ...

    Text Solution

    |

  3. A coil having 200 turns has a surface area of 0.15m^(2). A magnetic fi...

    Text Solution

    |

  4. A jet water, whose cross section is A strikes a wall making an angle t...

    Text Solution

    |

  5. A sound wave of frequency f propagating through air with a velocity c,...

    Text Solution

    |

  6. Two men A and B are carrying a uniform bar of length L on their should...

    Text Solution

    |

  7. A body is falling under gravity . When it loses a gravitational potent...

    Text Solution

    |

  8. Dimensional formula of magnetic field is :-

    Text Solution

    |

  9. Two particles are projected simultaneously in the same vertical plane,...

    Text Solution

    |

  10. The diagram of a logic circuit is given below. The output F of the cir...

    Text Solution

    |

  11. A fully charged capacitor has a capacitance C. It is discharged throug...

    Text Solution

    |

  12. The instantaneous current and volatage of an AC circuit are given by ...

    Text Solution

    |

  13. An object is approaching a convex lens of focal length 0.3m with a spe...

    Text Solution

    |

  14. A bimetallic is made of two strips A and B having coefficients of line...

    Text Solution

    |

  15. A wire of natural length l, young's modulus Y and area of cross-sectio...

    Text Solution

    |

  16. A copper disc of radius 0.1 m is roated about its centre with 20 revol...

    Text Solution

    |

  17. Figure shows the acceleration-time graphs of a particle. Which of the ...

    Text Solution

    |

  18. A single slit of width b is illuminated by a coherent monochromatic li...

    Text Solution

    |

  19. A given quantity of a ideal gas is at pressure P and absolute tempera...

    Text Solution

    |

  20. The radiation emitted by a star A is 10,000 times that of the sun. If ...

    Text Solution

    |