An insulated wire which has an insulating layer on the outer circumference of one conductor or each one of a plurality of conductors, while having an adhesive layer on the outer circumference of the insulating layer. The adhesive layer has a thickness of 2-200 [Mu]m; and a resin constituting the adhesive layer does not have a melting point and has a tensile modulus of elasticity of from 0.6*107-10*107 Pa at 250 DEG C, while having a substance that has two or more amino groups in the surface of the adhesive layer. A coil which is formed of this insulated wire; and an electrical/electronic device which uses this coil.