Abstract: Electromagnetically excitable coils which are each formed by winding an electrical conductor which comprises graphene and/or carbon nanotubes are already known. According to the invention, the coil can be produced with a conductor strip in such a way that a winding space which is available to the coil is utilized in an optimum manner. According to the invention, provision is made for the at least one electrical conductor (2) to be designed as a conductor strip and to be wound in such a way that its conductor cross section is folded and/or angled over a certain length.