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State the Biot-Savart law. Use it to obt...

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

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Knowledge Check

  • What will be magnetic field at centre of current carrying circular loop of radius R?

    A
    `(mu_(0)I)/(4piR)`
    B
    `(mu_(0)I)/(2piR)`
    C
    `(mu_(0)I)/(2R)`
    D
    zero

  • Magnetic field at the centre of a circular loop of area

    A
    `(BA^(2))/(mu_(0)pi)`
    B
    `(BAsqrtA)/(mu_(0)`
    C
    `(BAsqrtA)/(mu_(0)pi`
    D
    `(2BAsqrtA)/(mu_(0)sqrtpi`

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