What materials are needed to make electromagnet?

Answer 1

-- a DC power supply; (e.g., battery)

-- a long conductor that can be arranged to take the current

several turns around a central axis; (e.g., wire)

-- a highly permeable core for the winding; (e.g., cylindrical clump of iron)

Answer 2

Superconductors aside, the materials needed are conductive wire, for winding in bobbins on a ferromagnetic core material. Core stampings from a transformer may serve the purpose.

electric current

Answer 3

Electromagnets require little more than a power source and a conductive substance, producing an electromagnetic field. Insulated copper wire, a battery, and an iron nail can be used to make an electromagnet at home, but industrial electromagnets work on much larger scales.

Answer 4

Wrap insulated wire around an iron core. (the strenght of magnetic field generated is proportional to the amount of current.)

An electric current flowing in a wire creates a magnetic field around the wire . To concentrate the magnetic field, in an electromagnet the wire is wound into a coil with many turns of wire lying side by side. The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. A coil forming the shape of a straight tube (a helix) is called a solenoid. Much stronger magnetic fields can be produced if a "core" of ferromagnetic material, such as soft iron, is placed inside the coil. The ferromagnetic core increases the magnetic field to thousands of times the strength of the field of the coil alone, due to the high magnetic permeability μ of the ferromagnetic material. This is called a ferromagnetic-core or iron-core electromagnet.

Answer 5

A good magnetic material like Iron etc. wire coils and high power electric current.

Answer 6

Insulated wire (to wind into a coil).

A source of current.

All else is optional.

Answer 7

For a very simple one: Wire, a battery, and a long nail to wrap the wire around