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State Ampere's circuital law. Use this l...

State Ampere's circuital law. Use this law to obtain the expression for the magnetic field inside an air cored toroid of average radius r having n-turns per unit length and carrying a steady current I.

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Explore conceptually related problems

(a) State Ampere's cicuital law. Use this law to obtain the expression for the magnetic field inside an air cored toriod of average radius 'R',having 'n' truns per unit length and carrying a steady current I. (b) An observer to the left of a solenoid of N turns each of cross section area 'A' observes that a steady current I in it flows in the clockwise direction. Depict the magnetic field lines due to the solenoid specifying its polarity and show that it acts as a bar magnet of magnetic moment m = NIA .

State Ampere's circuital law. Obtain an expression for magnetic induction along the axis of toroid.

Knowledge Check

  • The magnetic field on the axis of a long solenoid having n turns per unit length and carrying a current is

    A
    `mu_(0)ni`
    B
    `mu_(0)n^(2)i`
    C
    `mu_(0)ni^(2)`
    D
    none of these

  • The magnetic field B within the solenoid having n turns per unit length and carrying a current I is given by

    A
    `mu_0 n I`
    B
    `4 pi mu_0 n I`
    C
    `nI`
    D
    `mu_0 n Il`

  • Magnetic field of a straight solenoid carrying carried 1 and having a n turns per unit length given by:

    A
    `B = (mu_(0)n I)/(2)`
    B
    `B = mu_(0) n I`
    C
    `B = mu_(0)n^(2)I`
    D
    `(mu_(0) n^(2)I)/(4)`

    • Similar Questions

    Explore conceptually related problems

    State Ampere's circuital law. By using it derive an expression for magnetic field intensity at a point due to a straight current carrying conductor.

    Using Ampere's circuital law, obtain an expression for the magnetic field along the aixs of a current carrying solenoid of length l and having N number of turns.

    Derive an expression for the magnetic field due to a solenoid of length 2l , radius a, having n number of turns per unit length and carrying a steady current I, at a point on the axial line, distant r from the centre of the solenoid. How does this expression compare with the axial magnetic field due to a bar magnet of magnetic moment M?

    State the Biot-Savart law. Use it to obtain an expression for magnetic field at the centre of a current carrying circular loop.

    The magnetic field B with in the solenoid having n turns per metre length and carrying a current of i ampere is given by

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