Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is $5.0 \mathrm{~cm}$. The magnitude of the magnetic field at a point $\mathrm{P}$ midway between the wires is _______ $\mu \mathrm{T}$

(Given : $\mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$)