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Magnetic Field At Centre Due To Current Carrying Coil |Magnetic Field On Axis Due To Current Carrying Coil|OMR

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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 magnetic field at a point P due to a current carrying coil as shown in figure is

    A
    `(mu_(0))/(4pi) (1)/(a^(2))`
    B
    `(mu_(0))/(4pi) (lax)/((x^(2)-a^(2))^(2))`
    C
    `(mu_(0))/(4pi) (2pila^(2))/(x^(2))`
    D
    `(mu_(0))/(4pi) (2pila^(2))/((x^(2)+a^(2))^(3"/"2))`

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