A noncontact power-transmission coil arrangement, comprising: a plurality of flexible printed-circuit boards (64a-64d) forming a multilayer structure, the multilayer structure including an adhesion layer and an insulating layer (63a-63d) sandwiched between respective printed-circuit boards in the structure, wherein on each flexible printed circuit board (64a-64d) is provided a planar coil formed by a spirally-wound conductor line pattern, wherein the ends of the respective conductor patterns of each of the plurality of flexible printed circuit boards, which are located at the inner peripheral portion of the respective conductor patterns, are electrically connected to one another through first through holes, wherein the ends of the respective conductor patterns of each of the plurality of flexible printed circuit boards which are located at the outer peripheral portion of the respective conductor patterns are electrically connected to one another through second through holes, wherein the respective first through holes are electrically connected to further through holes which are located at the outer peripheral portion of the respective conductor patterns, wherein one of the outer flexible printed circuit boards in the multilayered structure, the second through hole is provided as a second coil contact portion, and is electrically connected to a second external connection terminal portion through a second inner conductor pattern, and on the same one of the outer flexible printed circuit boards, the first through hole is provided as a first coil contact portion, and is electrically connected to a first external connection terminal portion through the further through hole and a first inner conductor pattern, wherein on the same one of the outer flexible printed circuit boards, a magnetic sheet is stuck onto the back-side of the flexible printed circuit board; wherein the inner peripheral portion of the planar coil pattern has a hole for the magnetic sheet formed in the multilayered structure, with the diameter of the hole being smaller than that of the said inner peripheral portion of the planar coil pattern, and the magnetic sheet is formed so that the inside of the said hole for the magnetic sheet is completely filled with magnetic sheet. a plurality of flexible printed-circuit boards (64a-64d) forming a multilayer structure, the multilayer structure including an adhesion layer and an insulating layer (63a-63d) sandwiched between respective printed-circuit boards in the structure, wherein on each flexible printed circuit board (64a-64d) is provided a planar coil formed by a spirally-wound conductor line pattern, wherein the ends of the respective conductor patterns of each of the plurality of flexible printed circuit boards, which are located at the inner peripheral portion of the respective conductor patterns, are electrically connected to one another through first through holes, wherein the ends of the respective conductor patterns of each of the plurality of flexible printed circuit boards which are located at the outer peripheral portion of the respective conductor patterns are electrically connected to one another through second through holes, wherein the respective first through holes are electrically connected to further through holes which are located at the outer peripheral portion of the respective conductor patterns, wherein one of the outer flexible printed circuit boards in the multilayered structure, the second through hole is provided as a second coil contact portion, and is electrically connected to a second external connection terminal portion through a second inner conductor pattern, and on the same one of the outer flexible printed circuit boards, the first through hole is provided as a first coil contact portion, and is electrically connected to a first external connection terminal portion through the further through hole and a first inner conductor pattern, wherein on the same one of the outer flexible printed circuit boards, a magnetic sheet is stuck onto the back-side of the flexible printed circuit board; wherein the inner peripheral portion of the planar coil pattern has a hole for the magnetic sheet formed in the multilayered structure, with the diameter of the hole being smaller than that of the said inner peripheral portion of the planar coil pattern, and the magnetic sheet is formed so that the inside of the said hole for the magnetic sheet is completely filled with magnetic sheet.