Home
Class 12
PHYSICS
the inductance of a closed-packed coil o...

the inductance of a closed-packed coil of `400` turns is `8mH`. `A` current of `5mA` is passed through it. The magnetic flux through each turn of the coil is

A

`1/(4pi)mu_(0)Wb`

B

`1/(2pi)mu_(0)Wb`

C

`1/(3pi)mu_(0)Wb`

D

`0.4mu_(0)Wb`

Text Solution

Verified by Experts

The correct Answer is:
A
`Nvarphi=LIrArrvarphi=(LI)/N=(8xx10^(-3)xx5xx10^(-3))/400`
`rArrvarphi=10^(-7)=mu_(0)/(4pi)Wb`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (APPLICATION OF EMI (Dynamo, Transformer…))|20 Videos

  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise PAST YEARS QUESTIONS|31 Videos

  • ELECTROMAGNETIC INDUCTION

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

The inductance of a closely packed coil of 400 turns is 8.0 mH. Calculate the magnetic flux through the coil when the current is 5.0 mA.

The self inductane of coil of 400 turns is 8 mH. If current of 5 mA flows in it, then flux associated with the coil is

A coil of 100 turns with a current of 5A produce a magnetic flux of 1 mu Wb and each turn of the coil. The coefficeint of self induction is

A current of 2.5 A flows through a coil of inductance 5 H. The magnetic flux linked with the coil is

A 200 turn coil of self - inductance 20 mH carries a current of 4 mA. Find the magnetic flux linked with each turn of the coil .

The self inductance of an inductance coil having 100 turns is 20 mH. Calculate the magnetic flux through the cross section of the coil corresponding to a current of 4 milliampere. Also, find the total flux

Calculate the self-inductance of a coil of 100 turns, if a current of 2A gives rise to magnetic flux of 50muWb through the coil. Also calculate the magentic energy stored in the medium surrounding the coil for the above value of current.

A 100 turn coil of self-inductance 50 mH carries a current of 10 mA. Find the magnetic flux linked with each turn of coil.

A coil has an inductance of 0.05 H and 100 turns and 0.02 A current is passed through it. Flux linked with coil is

ERRORLESS-ELECTROMAGNETIC INDUCTION-NCERT BASED QUESTIONS (STATIC EMI)
  1. Three solenoid coils of same dimension, same number of turns and same ...

    Text Solution

    |

  2. A long solenoid has 500 turns. When a current of 2A is passed through ...

    Text Solution

    |

  3. the inductance of a closed-packed coil of 400 turns is 8mH. A current ...

    Text Solution

    |

  4. A coil of N=100 turns and area 1cm^2 carries a current I=5 A and creat...

    Text Solution

    |

  5. Two identicaly induction coils each of inductance L joined in series ...

    Text Solution

    |

  6. An e.m.f. of 5 "volt" is produced by a self-inductance, when the curre...

    Text Solution

    |

  7. An e.m.f. of 12 "volts" is induced in a given coil when the current in...

    Text Solution

    |

  8. The current in a coil changes from 4 ampere to zero in 0.1s. If the a...

    Text Solution

    |

  9. When the current through a solenoid increases at a constant rate, the ...

    Text Solution

    |

  10. The number of turns of primary and secondary coils of a transformer ar...

    Text Solution

    |

  11. A short soleniod of radius a, number of turns per unit length n(1), an...

    Text Solution

    |

  12. According to phenomenon of mutual inductance,

    Text Solution

    |

  13. Two coils have a mutual inductance 0.005 H, The current changes in the...

    Text Solution

    |

  14. What is the mutual inductance of a two-loop system as shown with centr...

    Text Solution

    |

  15. A 50 Hz ac current of peak value 2 A flows through one of the pair of ...

    Text Solution

    |

  16. Two circuits have coefficient of mutual induction of 0.09 henry. Avera...

    Text Solution

    |

  17. A solenoid has 2000 turns wound over a length of 0.3 m. Its cross-sect...

    Text Solution

    |

  18. The mutual inductance between a primary and secondary circuit is 0.5H....

    Text Solution

    |

  19. A solenoid is placed inside another solenoid, the length of both being...

    Text Solution

    |

  20. A coil of resistance 10Omega and an inductance 5H is connected to a 10...

    Text Solution

    |