Permanent Magnets and Electromagnets Permanent Magnets: A permanent magnet is an object that exhibits a magnetic field regardless of the presence of any...
Permanent Magnets:
A permanent magnet is an object that exhibits a magnetic field regardless of the presence of any external magnetic field. This means that the magnet itself contains a magnetic domain, which is a region with a net magnetic field. Examples of permanent magnets include iron, nickel, and cobalt coins, nail magnets, and magnets embedded in wood.
Electromagnets:
An electromagnet is an object that can attract or repel magnets due to the presence of a magnetic field. This occurs because electromagnets contain a conductor (usually a metal) that can conduct electricity. When a voltage is applied to the conductor, it creates a magnetic field that can attract or repel nearby magnets. Electromagnets are commonly used in various applications, such as speakers, computer hard drives, and compass needles