Home
Class 12
PHYSICS
A toroid has number of turns per unit le...

A toroid has number of turns per unit length `n`, current `i`, then the magnetic field is

A

`mu_(0)ni`

B

`mu_(0)n^(2)i`

C

`mu_(0)i//n`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    ERRORLESS |Exercise QUESTIONS|126 Videos

  • MAGNETISM

    ERRORLESS |Exercise Assertion & Reason|1 Videos

Similar Questions

Explore conceptually related problems

A wire is wound on a long rod of material of relative permeability mu_(r)=4000 to make a solenoid.If the current through the wire is 5A and number of turns per unit length is 1000 per metre,then the magnetic field inside the solenoid is:

A wire is wound on a long rod of material of relative permeability mu_(r) = 4000 to make a solenoid. If the current through the wire is 5 A and number of turns per unit length is 1000 per metre, then the magnetic field inside the solenoid is

A long solenoid has a radius a and number of turns per unit length is n . If it carries a current i, then the magnetic field on its axis is directly proportional to

In a solenoid, the corrent flowing through the wire is I and number of turns per unit length is n. This gives a magnetic field B inside the solenoid. If number of turn per unit length is increased to 2n, what will be the value of magnetic field in the solenoidgt

In a toroid the number of tuns per unit length is 1000 and current through it is 1/(4pi) ampere. The magnetic field produced inside (in "weber"//m^(2) ) will be

A long solenoid carrying a current produces a magnetic field B along its axis. If the current is doubled and the number of turns per cm is halved, the new vlaue of the magnetic field is

ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
  1. Magnetic field at the centre of coil of n turns, bent in the form of a...

    Text Solution

    |

  2. Which of the following gives the value of magnetic field according to,...

    Text Solution

    |

  3. A toroid has number of turns per unit length n, current i, then the ma...

    Text Solution

    |

  4. Magnetic field due to a ring having n turns at a distance x on its axi...

    Text Solution

    |

  5. A and B are two concentric circular conductors of centre O and carryin...

    Text Solution

    |

  6. A long straight wire carries an electric current of 2A. The magnetic ...

    Text Solution

    |

  7. A straight wire carrying a current 10 A is bent into a semicircular ar...

    Text Solution

    |

  8. A long solenoid of length L has a mean diameter D. It has n layers of ...

    Text Solution

    |

  9. A circular loop of radius 0.0157m carries a current of 2.0 amp. The ma...

    Text Solution

    |

  10. A long solenoid has 200 turns per cm and carries a current of 2.5 amps...

    Text Solution

    |

  11. Two concentric coplanar circular loops of radii r(1) and r(2) carry cu...

    Text Solution

    |

  12. ABCD is a square loop made of a uniform conducting wire. A current ent...

    Text Solution

    |

  13. Magnetic fields at two points on the axis of a circular coil at a dist...

    Text Solution

    |

  14. An electric current passes through a long straight wire. At a distanc...

    Text Solution

    |

  15. A closely wound flat circuar coil of 25 turns of wire has diameter of ...

    Text Solution

    |

  16. The dimension of magnetic field in M,L,T and C (coulomb) is given as

    Text Solution

    |

  17. A current of 2 amp. flows in a long, straight wire of radius 2 mm. The...

    Text Solution

    |

  18. The magnetic field at the centre of a circular coil of radius r carryi...

    Text Solution

    |

  19. 1A current flows through an infinitely long straight wire. The magneti...

    Text Solution

    |

  20. Two infinitely long parallel wires carry equal current in same directi...

    Text Solution

    |