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Why is magnetic field maximum at the cen...

Why is magnetic field maximum at the centre of a current-carrying coil?

Text Solution

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Magnetic fields due to two semicircular segments of the coil assist each other at the centre.
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The magnetic field at the centre of the current carrying coil

Mark the statement True(T) or False (F). The magnetic field at the centre of a current -carrying coil is perpendicular to the plane of the coil.

Knowledge Check

  • The magnetic field at the centre of current carrying coil is

    A
    `(mu_(0)ni)/(2r)`
    B
    `(mu_(0))/(2pi)(ni)/r`
    C
    `(mu_(0)ni)/(4r)`
    D
    `mu_(0)ni`

  • The ratio of the magnetic field at the centre of a current carrying coil of the radius a and at distance 'a' from centre of the coil and perpendicular to the axis of coil is

    A
    `1/(sqrt(2))`
    B
    `sqrt(2)`
    C
    `1/(2sqrt(2))`
    D
    `2sqrt(2)`

  • The ratio of magnetic field at the centre of a current carrying circular coil to its magnetic moment is x. If the current and the radius both be doubled, the value of this ratio would be

    A
    2x
    B
    4x
    C
    `(x)/(4)`
    D
    `(x)/(8)`

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    What is the direction of magnetic field at the centre of a current- carrying circular loop?

    What happens to the magnetic field at the centre of a circular current carrying coil if we double the radius of the coil keeping the current unchanged?

    The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a semi-circular coil made from the same length of wire will be

    The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a square coil made from the same length of wire will be

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