State Biot-Savart's law for the magnetic field due to a current carrying element. Use this law to obtain an expression for the magnetic field at the centre of a circular loop of radius 'a' carrying a current 'I'. Draw the magnetic field lines for a current loop indicating the direction of magnetic field.

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TextMagnetic Field Due to Current-Carrying Circular LoopBiot-Savart Law for Magnetic Field Due to Current ElementCBSE PYQ

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TextMagnetic Field Due to Current-Carrying Circular Loop