Is Copper Magnetic?

Copper is not a magnetic material; however, it can influence and be influenced by a magnetic field. The electrons in copper’s molecular structure are relatively unstable and can be induced to generate an electric current when exposed to a moving magnetic field. Conversely, when a magnet moves through a coil of copper wire, it can also induce an electric current.

Due to its low electrical resistance, copper is highly efficient for electrical wiring applications, facilitating the transfer of electrical current. Additionally, copper is utilized to create eddy currents, which can function as a braking or dampening system. According to Faraday’s Law, when a magnet moves past a copper surface, the electrons within that surface are induced to generate an electrical current. This process results in an electromagnetic field that creates an opposing magnetic force, which is perpendicular to the original magnetic field. The strength of this opposing field is influenced by the materials involved, as well as their size, strength, and shape. These opposing forces have various practical applications, including train braking systems. This type of electromagnetic field can also be harnessed to generate heat for electric induction cooktops.