GEOLOGY

Detailed explanation-1: -Electromagnets and permanent magnets alike attract metals with iron contents. The higher the iron content the greater the attraction. The lower the iron content the lower the attraction. Electromagnets and permanent magnets for example will not attract metals such as, aluminum, brass or gold to name a few.

Detailed explanation-2: -Therefore, the magnet can generate a magnetic field, but only a small part of the metal that can be attracted by the magnet, such as iron, nickel, cobalt, and other magnetophilic metals while most other metals will not be attracted, such as gold, silver, copper, aluminum, tin, lead, titanium, etc.

Detailed explanation-3: -Strength of an Electromagnet The combined magnetic force of the magnetized wire coil and iron bar makes an electromagnet very strong. In fact, electromagnets are the strongest magnets made. An electromagnet is stronger if there are more turns in the coil of wire or there is more current flowing through it.

Detailed explanation-4: -A magnetic field around the magnet attracts certain kinds of metal. The magnet is strong enough to lift huge objects such as cars. It can also separate iron from other metals and materials.