the coil material with resistance

 neodymium block magnet,magnetic material coil number and center, in the design of electromagnet coil will focus on the distribution and theiron material selection, and the use of direct current to control the size of the magnetic field strength. However,the coil material with resistance and limit the neodymium block magnet can produce magnetic field, but with theapplication of superconductors and bullet magnet discovery will have the opportunity to break the existing restrictions.