Magnetic field around a finite wire with different diameter

[Agnelo]

In my simulation I have a wire with a fixed current flowing, I observed if I change the diameter of the wire the magnetic field (B) in a fixed point of the space also changes, is it correct?

 

[tech99]

In my simulation I have a wire with a fixed current flowing, I observed if I change the diameter of the wire the magnetic field (B) in a fixed point of the space also changes, is it correct?

That does not seem correct, as the magnetic field depends only the current.

 

[Agnelo]

Yeah, I am agree, only the length affects the measurement, but in this case the length does not change, only the diameter, I don't understand what's wrong...

I have a wire with a 0.05A current over a measurement point at 0.03mm (border of wire), the length of wire is 5.08mm and the diameter is 0.025mm or 0.05mm...

 

[davenn]

I have a wire with a 0.05A current over a measurement point at 0.03mm (border of wire), the length of wire is 5.08mm and the diameter is 0.025mm or 0.05mm...

with everything on such a tiny scale, I wouldn't be surprised if it was just measurement error

1) why such small lengths of wire and measurement distance and current ?
2) how are you measuring the B field strength ?

 

[jartsa]

In my simulation I have a wire with a fixed current flowing, I observed if I change the diameter of the wire the magnetic field (B) in a fixed point of the space also changes, is it correct?

How did you place the thick wire on the same position where the thin wire was? Oh yes, nearest point 0.03 mm from the fixed point ... so part of the thick wire is too far from the fixed point.