An iron core and wire wound around it
in door bells,
An elecromagnet is the entire set of coils which produce a magnetic field when an electrical current is run through the wire. A solenoid is a single coil in the electromagnet.
burat
Its called an electromagnet
An electromagnet requires only two parts, a core of ferro-magnetic material and wires winding around it. The wires magnetize the core when current flows through them, and the core then creates the magnetic field which the electromagnet is intended to produce.
The 3 main parts of the brain are 1. Cerebrum 2. Cerebellum 3. Brain Stem
The 3 parts of an plant cell are... The cell membrane, the cytoplasm and the nucleus.
A magnet
There is more than 3 main parts of the Earth. They are biosphere, geosphere, hydrosphere, atmosphere, lithosphere, and sphere.
There are 3 main parts: The Frame, The Bed and The Springs.
An iron core and wire wound around it
The human skeleton is made up of three main parts. These parts are the bones, the cartilages, and the joints.
The theee main parts of the microscope are Lenses Tube-arm assembly illuminator
The three main parts of the microscope are the Mechanical parts, Magnifying parts and the Illuminating parts.
yes
The tree main parts of a triangle are the sides, the angles and the vertices.