Home
Class 12
PHYSICS
The north pole of a magnet is brough dow...

The north pole of a magnet is brough down along the axis of a horizontal circular coil (figure) As a result the flux through the coil changes from `0.4 Weber` to `0.9 Weber` in an interval of half of a second.Find the average `emf` induced during this period.Is the induced current clockwise and anticlockwise as you look into the coil from the side of the magnet?

Text Solution

Verified by Experts

The correct Answer is:
A, C
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise Exercis-1 PART 2|51 Videos
  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise Exercis-2 PART 1|14 Videos
  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise Problem|12 Videos
  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Advanced level problems|31 Videos
  • ELECTROSTATICS

    RESONANCE ENGLISH|Exercise HLP|40 Videos

Similar Questions

Explore conceptually related problems

The north pole of a magnet is brought down along the axis of a horizontal circular coil . As a result, the flux through the coil changes from 0.35 weber to 0.85 weber in an interval of half a second. Find the average emf induced during this period. Is the induced current clockwise or anticlockwise as you look into the coil from the side of the magnet?

A coil having an area 2m^(2) is placed in a magnetic field which changes from 1 Wb//m^(2) to 4Wb//m^(2) in an interval of 2 second. The average e.m.f. induced in the coil will be

The current in a coil changes from 3.50 A to 2.00 A in the same direction in 0.500s. If the average emf induced in the coil is 12.0mV. What is the inductance of the coil?

A varying current ina coils changes from 10 A to zero in 0.5 s .If the average emf induced in the coils is 220 V , the self- inductance of the coils is

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-

The north of a bar magnet is moved towards a coil along the axis passing through the centre of the coil and perpendicular to the plane of the coil. The direction of the induced current in the coil when viewed in the direction of the motion of the magnet is

The average emf induced in the secondary coil is 0.1 V when the current in the primary coil changes from 1 to 2A in 0.1 s .What is the mutual inductance of the coils.

In a coil current falls from 5 A to 0 A in 0.2 s. If an average emf of 150 V is induced, then the self inductance of the coil is

The average e.m.f. induced in a coil in which the current changes from 2 ampere to 4 ampere in 0.05 second is 8 volt . What is the self inductance of the coil ?

A 50 turns circular coil has a radius of 3 cm, it is kept in a magnetic field acting normal to the area of the coil. The magnetic field B increased from 0.10 tesla to 0.35 tesla in 2 milliseconds. The average induced e.m.f in the coil is

RESONANCE ENGLISH-ELECTROMAGNETIC INDUCTION-Exercis-1
  1. If flux in a coil changes by Deltaphi, and the resistance of the coil ...

    Text Solution

    |

  2. The north pole of a magnet is brough down along the axis of a horizont...

    Text Solution

    |

  3. The flux of magnetic field through a closed conducting loop of resista...

    Text Solution

    |

  4. (a) the magnetic field in a region varies as shown in . Calculate the ...

    Text Solution

    |

  5. A conducting loop confined in a plane is rotated in its own plane with...

    Text Solution

    |

  6. A metallic ring of area 25 cm^(2) is placed perpendicular to a magneti...

    Text Solution

    |

  7. A solenoid has a cross sectional area of 6.0xx10^(-4) m^(2), consists ...

    Text Solution

    |

  8. A heart pacing device consists of a coil of 50 turns & radius 1 mm jus...

    Text Solution

    |

  9. Fig. illustrates plane figures made of thin conductors which are lo...

    Text Solution

    |

  10. A unifrom magnetic field B exists in a cylindrical region of radius 1 ...

    Text Solution

    |

  11. A coil ABD of N turns & radius R carries a current of 1 Amp & is place...

    Text Solution

    |

  12. A closed circular loop of 200 turns of mean diameter 50 cm & having a ...

    Text Solution

    |

  13. Figure shows a square loop of resistance 1Omega of side 1 m being move...

    Text Solution

    |

  14. Find the total heat produced in the loop of the previous problem durin...

    Text Solution

    |

  15. Two straight long parallel conductors are moved towards each other. A ...

    Text Solution

    |

  16. A metallic wire PQ of length 1 cm moves with a velocity of 2 m//s in a...

    Text Solution

    |

  17. A right angled triangle abc made of a metallic wire, moves at a unif...

    Text Solution

    |

  18. A metallic metre stick translates in a direction making an angle of 60...

    Text Solution

    |

  19. The two rails of a railway track, insulataed form each other and from...

    Text Solution

    |

  20. A circular copper ring of radius r translates in its plane with a cons...

    Text Solution

    |