A superconductor is a material that can conduct electricity without any resistance. In order to illustrate this phenomenon, there are several steps that must be taken. First, a material must be chosen that has a critical temperature at which it becomes superconducting. Then, a magnetic field needs to be applied to the material so its electrons can be disturbed in order for its electrical resistance to drop. Once this has been accomplished, an electrical current will continue flowing through the material even after the external source of power has been removed. Finally, direct measurements of the resistance of the material will confirm whether or not it has achieved true superconductivity. With the help of EdrawMax, you can easily recreate a similar diagram.