According to Biot-Savart's Law, magnetic field due to a current carrying conductor is inversely proportional to which of the following?

square of distance of separation

Biot savart law states that “ magnetic field due to a current-carrying conductor at a distance point is inversely proportional to the square of the distance between the conductor and point, and the magnetic field is directly proportional to the length of the conductor, current flowing in the conductor”.

dB ∝ I, 1/r²

dB : magnetic field due to infinitesimally small element of length

I : Current

r : Distance of separation