As shown in the figure, two infinitely long, identical wires are bent by 90° and placed in such a way that the segments LP and QM are along the x…

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