Home
Class 12
PHYSICS
A coil of area 100 cm^(2) has 500 turns....

A coil of area `100 cm^(2)` has `500` turns. Magnetic field of `0.1 "weber"//"meter"^(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

1 V

B

5 V

C

50 V

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
B
`e=(-NDeltavarphi)/(Deltat)=(-N(0-BA))/(Deltat)=(500xx100xx10^(-4)xx0.1)/0.1`
e = 5V.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Motional EMI)|25 Videos

  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (STATIC EMI)|39 Videos

  • CURRENT ELECTRICITY

    ERRORLESS|Exercise ASSERTION AND REASON|26 Videos

  • ELECTRON, PHOTON, PHOTOELECTRIC EFFECT & X -RAY

    ERRORLESS|Exercise ASSERTION & REASON|27 Videos

Similar Questions

Explore conceptually related problems

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 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 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

If number of turns of 70 cm^(2) coil is 200 and it is placed in a magnetic field of 0.8 Wb//m^(2) which is perpendicular to the plane of coil and it is rotated through an angle 180^(@) in 0.1 sec , then induced emf in 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

A coil of area 0.05 m^(2) and 500 turns is placed in a magnetic field of strength 4 xx 10^(-5) tesla. If it is rotated through 90^(@) in 0.1 sec, then the magnitude of e.m.f. Induced in the coil will be

A coil of area 500cm^(2) and having 1000 turns is held perpendicular to a uniform field of 0.4 gauss. The coil is turned through 180^(@) in 1//10sec . Calculate the average indued e.m.f.

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

ERRORLESS-ELECTROMAGNETIC INDUCTION-ASSERTION & REASON
  1. A coil of area 100 cm^(2) has 500 turns. Magnetic field of 0.1 "weber"...

    Text Solution

    |

  2. Assertion: Eddy current is produced in any metallic conductor when mag...

    Text Solution

    |

  3. Assertion: The quantity L//R possesses dimensions of time. Reason: T...

    Text Solution

    |

  4. Assertion: Faraday's laws are consequences of conservation of energy. ...

    Text Solution

    |

  5. Assertion: Only a charge in magnetic flux will maintain an induced cur...

    Text Solution

    |

  6. Assertion: In electric circuits, wires carrying currents in opposite d...

    Text Solution

    |

  7. Asseration:The induced e.m.f. and curent will be same in two identical...

    Text Solution

    |

  8. Asseration:Induced coil are made of copper. Reason:Induced current i...

    Text Solution

    |

  9. Asseration:Self-inductance is called the inertia of electricity. Rea...

    Text Solution

    |

  10. Asseration: When two coils are wound on each other, the mutual inducti...

    Text Solution

    |

  11. Assertion : An emf vec(E) is induced in a closed loop where magnetic f...

    Text Solution

    |

  12. Assertion: An aircraft files along the meridian, the potential at the ...

    Text Solution

    |

  13. Assertion: A spark occur between the poles of a switch when the switch...

    Text Solution

    |

  14. Assertion : In the phenomenon of mutual induction, self induction of...

    Text Solution

    |

  15. Asseration:Lenz's law violates the principle of conservation of energy...

    Text Solution

    |

  16. (A): An induced emf is generated when magnet is withdrawn from the sol...

    Text Solution

    |

  17. Assertion : An artificial satellite with a metal surface is moving a...

    Text Solution

    |

  18. Asseration: A metal piece and a non-metal (stone) piece are dropped fr...

    Text Solution

    |

  19. Assertion : A transformer cannot work on dc supply. Reason : dc chan...

    Text Solution

    |

  20. Assertion: Soft iron is used as transformer core. Reason: Soft iron ...

    Text Solution

    |

  21. Assertion : An ac generator is based on the phenomenon of self-induc...

    Text Solution

    |