Biot Savart law - Inversely related parameters

Q.  According to Biot-Savart law, which parameter/s exhibit/s an/the inverse relationship to the differential magnetic field intensity (dH)?
- Published on 05 Oct 15

a. Current
b. Magnitude of differential length
c. Sine of angle between filament & line connecting differential length to point
d. Square of the distance from differential element to point

ANSWER: Square of the distance from differential element to point

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