As shown in the figure, two infinitely long, identical wires are bent by $90^{\circ}$ and placed in such a way that the segments LP and QM are along the $x$-axis, while segments PS and QN are parallel to the y -axis. If $\mathrm{OP}=\mathrm{OQ}=4 \mathrm{~cm}$, and the magnitude of the magnetic field at O is $10^{-4} \mathrm{~T}$, and the two wires carry equal currents (see figure), the magnitude of the currents in each wire and the direction of the magnetic field at O will be $\left(\mu_0=4 \pi \times 10^{-7} \mathrm{NA}-2\right)$