Home
Class 12
PHYSICS
A rectangular coil of area 50 xx 10^-4m^...

A rectangular coil of area `50 xx 10^-4m^2` has 100 turns. A magnetic field `10^-2 wb//m^2` (uniform) is applied perpendicular to the plane of the coil. The field is withdrawn in 40 ms. Find the e.m.f. inducedin the coil.

Promotional Banner

Topper's Solved these Questions

  • MODEL PAPER SET-06

    UNITED BOOK HOUSE|Exercise EXERCISE|45 Videos
  • MODEL PAPER SET-08

    UNITED BOOK HOUSE|Exercise EXERCISE|59 Videos

Similar Questions

Explore conceptually related problems

A coil of area 0.15 m^2 and 100 turns is placed perpendicular to a magnetic field, The field changes from 5 xx 10^-3 Wbm^-2 to 2 xx 10^-3 Wbm^-2 in a time interval of 30 millisecond. Find the induced emf in the coil.

A rectangular coil of area 0.2 m^(2) is held in a magnetic field of strength 2T in such a way that the normal to the plane of the coil makes an angle 30^(@) with the field. What is the flux linked with the coil?

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 rectangular loop of area 15xx40cm^2 is placed in a magnetic field of 0.6( Wb)/m^2 . Calculate the magnetic flux linked with the loop when the plane of the loop is perpendicular to the field.

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 rectangular coil of N turns and area of cross section A is held in a magnetic field B=B_0 sin omega t. Deduce an expression for the emf induced in the coil.

A coil of 100 turns and of diameter 0.2 m is placed at right angles to a uniform magnetic field. If the field increases uniformly from 0.1Wb . m^(-2) to 0.3Wb.m^(-2) in 0.05s, find out the emf induced in the coil.

The magnetic flux linked with a coil satisfies the relation phi=4t^(2)+6t+9 Wb where t is the time in second. The e.m.f. induced in the coil at t =2 second is

A current of 1 A is flowing through a circular coil of radius 10 cm having N turns. If the magnetic field produced at the centre of the coil be 4pixx10^(-6)T , what is the value of N ?

UNITED BOOK HOUSE-MODEL PAPER SET-07-EXERCISE
  1. Find the capacitance of a parallel plate capacitor.

    Text Solution

    |

  2. The unit of which physical quantity corresponds to J//C ? Is it scalar...

    Text Solution

    |

  3. An electric dipole consists of two charges +- 20 xx 10^-6 C separated...

    Text Solution

    |

  4. State Biot Savarts law. Write down the expression of magnetic field at...

    Text Solution

    |

  5. In Young’s Double Slit experiment, the: two sources, haye intensities ...

    Text Solution

    |

  6. Establish Einstein’s equation in photo-electric effect.

    Text Solution

    |

  7. The ground state energy of hydrogen atom is - 13.6 eV:- What does nega...

    Text Solution

    |

  8. The ground state energy of hydrogen atom is - 13.6 eV:- What is the en...

    Text Solution

    |

  9. How is the p-n junction, used as a half wave rectifier and draw the in...

    Text Solution

    |

  10. Emitter base connection is kept in forward bias — why?

    Text Solution

    |

  11. Write down Kirchhoff’s laws from electric circuit.

    Text Solution

    |

  12. A resistance 1000 Omega is connected to a 100 V supply line. A voltmet...

    Text Solution

    |

  13. A Wheatstone network ABCD contains equal resistances P in the arms AB ...

    Text Solution

    |

  14. A household circuit has a fuse 5A rating. Calculate the maximum number...

    Text Solution

    |

  15. Show the dimension of L/R is equal to the dimension of time.

    Text Solution

    |

  16. State Faraday’s laws in electromagnetic induction.

    Text Solution

    |

  17. Prove for an a.c. circuit Vr.m.s. = V0/sqrt2, where V0= peak value of ...

    Text Solution

    |

  18. A rectangular coil of area 50 xx 10^-4m^2 has 100 turns. A magnetic fi...

    Text Solution

    |

  19. Focal lengths of two thin lenses kept in contant are f1 and f2. Prove ...

    Text Solution

    |

  20. A particle executes simple harmonic motion along principle axis of a c...

    Text Solution

    |