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If a wire is wrapped around a ferromagnetic material (those which are attracted by a magnet) and a current is flown through the wire, the material behaves like a magnet. This phenomenon is known as electromagnetism. The electromagnet can attract other ferromagnetic material just like any magnet. Usually a soft iron-core is used for good results. By such a phenomenon you get a temporary magnet whose magnetic property can be switched on or of by a switch! You can try this at home by wrapping a wire around an iron-nail and using a battery for current.
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What happens to the electromagnet when the circuit is closed?
An electromagnet if formed by pushing current through a coil. If the circuit is truly open, current will cease to flow, thus no electromagnet.
Is a circuit breaker an electromagnet?
No.
How fast does an electromagnet have to spin to produce 1megawatt?
A spinning electromagnet does not produce power without other components that you need to specify.
Does electromagnet work only on DC?
They normaly are. AC ones tend to buzz. The core has to be of soft iron or laminate, so that the field collapses properly when the current is switched off.
A safety device that uses an electromagnet to shut off the circuit is called a?
A safety device that uses an electromagnet to shut off the circuit is called a contactor.
How do electromagnet fire alarms work?
the electromagnet makes the door close when a fire alarm goes off
Do you have to connect a cell to work an electromagnet?
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.
What does a battery contribute to an electromagnet to help it work?
A core
How does an electromagnet work in blender?
it connets to the bottom of the machine
What must you have for an electromagnet to work that you don't need for a regular magnet?
To make an electromagnet work, you need an electric current flowing through a coil of wire, which is not needed for a regular magnet.
In an electromagnet that turns the drive shaft which does the work?
The driveshaft carries the power but the whole unit does the work.
In an electromagnet which turns the drive shaft that does the work?
The driveshaft carries the power but the whole unit does the work.
How does lectromagnet work in loud speakers?
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.
What makes the electromagnet work?
maybe electrical energy i don't know
What must flow through the coil of wire to make the electromagnet work?
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.
Can an electric bell use an electromagnet?
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.
Which is better a permanent magnet or an electromagnet?
electromagnet
