State and explain biotsawart low
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Gaurav Seth 4 years, 9 months ago
Consider a conductor XY carrying current I. There we choose an infinitesimal element dl of the conductor. The magnetic field dB due to this element is to be determined at a point P which is at a distance ‘r’ from it. Let θ be the angle between dl and the position vector ‘r’. According to Biot-Savart’s law, the magnitude of the magnetic field dB at a point p is proportional to the current I, the element length |dl|, and inversely proportional to the square of the distance r and dB is directed perpendicular to the plane containing dl and r.
here μ0 = 4π x 10-7 Hm-1 is a constant called permeability of vacuum.
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