Two identical circular planar surface charges float in free space (permittivity €0). Thesurface charge density is constant over the disk pso (with units As/m²) for both disks.The disks are separated by distance 'a'. Let's fix the coordinate system such that theupper disk is on the xy plane (z = 0) and its center lies on the origin. The lowerplate is on the xy plane (z = −a). The goal is to find the expression for electric scalarpotential at the symmetry axis (z) between the two disks.aPs0Ps0ZSOAb(a) Determine the scalar potential V(z) at the z axis in between the two disks. Re-member that you need to integrate the effect of all charge in the disk. (Sincethere are two disks you will need superposition. The cylindrical coordinate sys-tem should be helpful.)Hint:X(B² + x²)¹/2′where C is constant of integration.dx=B² + x² + C

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