What is Biot savart law ?
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Gaurav Seth 3 years, 4 months ago
BIOT-SAVART LAW:
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)
1Thank You