The magnetic field between two parallel wires can be calculated using Biot-Savart’s law. This law describes the magnetic field produced by an electric current. For two long straight wires in parallel, you can use the following formula to calculate the strength of the magnetic field between them.

Biot-Savart law:

For two infinitely long parallel straight wires, the magnetic field strength (B) between them can be calculated by the following formula:
B=μ0 ⋅I⋅L/2π⋅d

Precautions:

This formula assumes that the wires are infinitely long and arranged in parallel.
If the wires are not infinitely long or if the layout changes, more complex formulas and math need to be considered.
In practical applications, for accurate measurement and calculation, factors such as the shape of the wire, the direction of the current, and the distance need to be considered.
The magnetic field strength between two parallel wires can be preliminarily calculated using Biot-Savart’s law, but practical applications may require more experimental data and precise calculations to obtain accurate results.