what is the magnetic field produced by very very thin conductor at any point of it
Hi githa, no magnetic field just due to a very thin conductor.
Only when current flows through thin conductor of infinite length then magnetic field due to a small current element of length dl, at a distance r on a line inclined with conductor by an angle @ is given by
dB = (mu o / 4 pi) * I dl sin @ / r^2
I is the current through conductor , mu o is the permittivity of free space
The above is called Biot-Savart's law
Only when current flows through thin conductor of infinite length then magnetic field due to a small current element of length dl, at a distance r on a line inclined with conductor by an angle @ is given by
dB = (mu o / 4 pi) * I dl sin @ / r^2
I is the current through conductor , mu o is the permittivity of free space
The above is called Biot-Savart's law