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Coil and core, and you'll need a power supply to activate it.
Wiki User
∙ 12y ago
Wiki User
∙ 15y ago1. A piece of metal.
2. Wire.
3. Battery.
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Why electromagnet is different from a permanent magnet because an electromagnet what?
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
How do you turn off an electromagnet?
This is what makes a magnet an electromagnet - the ability to turn it on and off... Anyway, electromagnets can be turned off with either the help of a switch, or just by disconnecting the power supply.
The strength of an electromagnet only depends on the current in the coils?
And the amount of coils.
Is there a magnet in an electromagnet?
An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current ceases. Take a look at this Wikipedia page for more information: http://en.wikipedia.org/wiki/Electromagnet
Would a powerfull electromagnet lift a needle out of a haystack?
Only if the needle was made of iron or copper
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.
How can you make an electromagnet stronger and why?
An electromagnet will maintain a charge as long as current continues to flow through it. Strengthening the charge is a matter of changing, or adjusting the components that enable the charge to flow. There are many ingredients that affect electromagnet strength. The length and width of the magnetic field, the amount of resistance the current encounters, the pulling power of the magnet itself, all determine how strong your electromagnet will be.
Which is better a permanent magnet or an electromagnet?
electromagnet
Strong temporary magnet formed when a current is passed through a coil of wire?
A magnetic field.
An electromagnet becomes storgner when the?
an electromagnet becomes storgner when the.
What does an electromagnet operator do to release metal attached to an electromagnet?
burat
What is a magnet made by electric current?
An electromagnet.
What is a solenoid with a ferromagnetic core called?
Its called an electromagnet
What does an electromagnet operator do to release metal attached to the electromagnet?
burat
Why electromagnet is used for separating plastic bags?
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.
Why electromagnet is different from a permanent magnet because an electromagnet what?
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
When was the electromagnet invented?
The electromagnet was invented in the year 1850 by william sturgeon :)
