Two long parallel wires X and Y, separated by a distance of 6 cm, carry currents of 5A and 4A, respectively, in opposite directions as shown in the…

Two long parallel wires X and Y, separated by a distance of $\displaystyle 6$ cm, carry currents of 5A and 4A, respectively, in opposite directions as shown in the figure. Magnitude of the resultant magnetic field at point P at a distance of $\displaystyle 4$ cm from wire Y is $\displaystyle x \times 10^{-5} \mathrm{~T}$. The value of $\displaystyle x$ is $\displaystyle \_\_\_\_$. Take permeability of free space as $\displaystyle \mu_0=4 \pi \times 10^{-7}$ SI units.