Magnets work because their atoms are aligned in certain orientation so that the magnetic field is not chaos but is organized as ripples around the matter. Such organized electromagnetic field of any nature can exist without any supporting media like air or water. If you think space is vacuum then you are wrong again. There is a lot of black or dark matter (invisible to current scientific equipment) in this universe and lots of particles like cosmic rays emitted by stars and galaxies. So magnets will work regardless of vacuum or space.
An electromagnet.
An electromagnet can attract the metal, leaving the plastic behind.An electromagnet can attract the metal, leaving the plastic behind.An electromagnet can attract the metal, leaving the plastic behind.An electromagnet can attract the metal, leaving the plastic behind.
An electromagnet is only magnetic while current is flowing through the coils. A permanent magnet is always magnetic, and does not need electricity. An example of an electromagnet at work is in a metal scrape yard, where a large electromagnet is used by a crane operator to lift ferrous metals into a crusher (scrapped cars, for instance). The metal drops into the crusher when the electricity is switched off by the crane operator. Therefore, they are only really similar when both are magnetised.
electromagnet
This is called an electromagnet. When a current passes through a coil of wire, a magnetic field is generated around the coil. This magnetic field creates a temporary magnet that can attract or repel other magnetic materials.
Yes, you would be able to use electromagnets in space.
the electromagnet makes the door close when a fire alarm goes off
A cell or other (DC) power source must, indeed, be connected to an electromagnet to make it work. It is an electromagnet. Surf the link to our friends at Wikipedia. It's a good article, and the pics are cool.
A core
it connets to the bottom of the machine
To make an electromagnet work, you need an electric current flowing through a coil of wire, which is not needed for a regular magnet.
The driveshaft carries the power but the whole unit does the work.
The driveshaft carries the power but the whole unit does the work.
The electromagnet is a very important part of loud speakers. The electromagnet is always placed in the front of the magnet. When the electricity goes through the electromagnet the field is changed and this produces the vibrations in speakers.
maybe electrical energy i don't know
An electric current must flow through the coil of wire to make the electromagnet work. This current creates a magnetic field around the coil, inducing magnetism.
Yes, an electric bell uses an electromagnet to work. When the electric current flows through the coil of wire in the electromagnet, it creates a magnetic field that attracts and repels the metal armature, causing it to strike the bell and produce sound.