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Biot severt law

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Biot severt law

    • Posted by Sanjay Pandey 5 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 5 years, 1 month ago

    • We already know now that current carrying conductor generates magnetic field around themselves. Biot-Savart law just mathematically states the intensity of this magnetic field at a point.
    • According to the Biot-Savart law, magnetic field dBdue to current element idl, at a pointP situated at distancer from the current element idl,is:

    i) directly proportional to the current element idl, ii) directly proportional to the sine of the angle (θ) between current element and r, and iii) inversely proportional to the square of the distance r between current element and the point

    dB∝idl (sinθ)/r2

    dB = (μo/4π)×idl×(sinθ)/r2

    dB = idl × r / r3

    Here proportionality constant is  μo/4π = 10-7Tm/A, and μois the permeability of free space (vacuum)

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