Home
Class 12
PHYSICS
A wire loop of area A is placed in a uni...

A wire loop of area A is placed in a uniform magnetic field B so that the directio of B is parallel to the plane of the coil. If B changes with time the emf induced in the loop will be

A

`A(dB)/(dt)`

B

`-A(dB)/(dt)`

C

zero

D

`1/3A(dB)/(dt)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2020

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS (CATEGORY-III)|3 Videos

  • QUESTION PAPER 2008

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|38 Videos

Similar Questions

Explore conceptually related problems

A rectangular coil carrying current I is placed in a uniform magnetic field B such that the direction of B is perpendicular to the plane of the coil. Calculate the torque experienced by the coil.

A coil having n number of turns and area A is placed in a magnetic field B so that its axis makes an angles 60^(@) with the direction of B.If B changes with time, the magnitude of the emf induced in the coil will be

A circular wire of radius r and with a constant current I is placed in a magnetic field vecB such that the direction of B is perpendicular to the plane of the wire. The value of the magnetic force on the circular wire—

A conducting loop in the form of a circle is placed in a uniform magnetic field with its plane perpendicular to the direction of the field. An emf will be induced in the loop if

A conducting circular loop of radius r carries a constant current I. It is placed in a uniform magnetic field vec(B) such that vec(B) is perpendicular to the plane of the loop. The magnetic force acting on the loop is

A metallic loop is placed in a uniform magnetic field B with the plane of the loop perpendicular to B. Under which condition(s) given below an emf will be induced in the loop? "If the loop is…." moved along the direction of vecB squeezed to a smaller area. rotated about its axis. rotated about one of its diameters.

An irregular shaped wire PQRS placed in a uniform magnetic field perpendicular to the plane of the paper changes into a circular shape. What will be the direction of the induced current in the loop.

As shown in the figure. a wire is bent to form a 1 - shaped closed loop. carrying current I . where the curved part is a semi - circle of radius R . The loop is placed in a uniform magnetic field vec(B) . which is directed into the plane of the paper . The magnetic force felt by the closed loop is

A coil of metallic wire is at rest in a non-uniform magnetic field. Would any electromotive force be induced in the coil?

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-PHYSICS
  1. Which of the following graphs represent variations of thermo emf (E) o...

    Text Solution

    |

  2. 1 gm of water (=1 cm^(3)) when boiled at 1 atmosphere pressure, requir...

    Text Solution

    |

  3. A wire loop of area A is placed in a uniform magnetic field B so that ...

    Text Solution

    |

  4. The source of unlimited thermal energy of stars is due to

    Text Solution

    |

  5. At a certain place, the horizontal component of earth's magnetic field...

    Text Solution

    |

  6. A train moving with a velocity v is passing a station. A passenger sta...

    Text Solution

    |

  7. The dimension of the coefficient of viscosity is

    Text Solution

    |

  8. If the displacement of a particle changes with time as sqrt(x)=t+3, th...

    Text Solution

    |

  9. A rain drop of radius R falls from a height of H metre above the groun...

    Text Solution

    |

  10. Which of the following heat transfer processes is/are necessary so tha...

    Text Solution

    |

  11. If the displacement (X) of the medium in the x-direction at a point x ...

    Text Solution

    |

  12. Which of the following equations is Einstein's equation related to pho...

    Text Solution

    |

  13. An object of mass m is projected at an angle 60^(@) (with horizontal a...

    Text Solution

    |

  14. The temperature at which the r.m.s velocity of constituent gas particl...

    Text Solution

    |

  15. A body is floating partially immersed in a liquid. If the body and the...

    Text Solution

    |

  16. 300 grams of water at 80^(@)C are poured on a large block of ice at 0^...

    Text Solution

    |

  17. If three bulbs of ratings 60W, 75W and 100 W are connected to 220 v ma...

    Text Solution

    |

  18. The current through a semiconductor is carried by

    Text Solution

    |

  19. An alternating voltage (E) varies with time (t) in a circuit which is ...

    Text Solution

    |

  20. The temeprature of a star can be determined using

    Text Solution

    |