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What are electromagents?
Magnets that are turned on by passing an electric current through them, and turned off by not allowing an electric current through them.
Why are electromagnets used instead of a permanent one?
sometimes in magnetic sepration etc electromagnets are more useful than permanent one as first magnet is used to seprate metallic waste and then its turned off so that attracted waste falls off at desired place so here permanent magnets are not that use full as electromagnet as in permanent magnet waste would get attracted but it would not fall. so electromagnet is more useful than permanent one.
Which magnetic material can retain permanent magnetization?
False permanent magnets can but electromagnets need a running current A+
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.
Objects that keep their magnetic properties for a long time?
A permanent magnet (in contrast to an electromagnet).
What can you use your statemennt for?
Permanent magnets can be turned off.
How are electro magnets different from other magnets?
Electromagnets use electricity to create a magnetic field, which can be turned on and off. They are typically stronger than permanent magnets. In contrast, permanent magnets, like those made of iron or nickel, are always magnetic without the need for an external power source.
What are the differences between electromagnets and permanent magnets, and how do electromagnets differ from permanent magnets?
Electromagnets and permanent magnets differ in how they are created and their magnetic properties. Electromagnets are temporary magnets created by passing an electric current through a coil of wire, while permanent magnets are naturally occurring magnets with a fixed magnetic field. Electromagnets can be turned on and off by controlling the electric current, while permanent magnets always have a magnetic field.
What are the differences between electromagnets and permanent magnets, and how do they function differently?
Electromagnets are temporary magnets created by passing an electric current through a coil of wire, while permanent magnets are naturally occurring magnets that retain their magnetism without an external power source. Electromagnets can be turned on and off by controlling the electric current, while permanent magnets always have a magnetic field.
How are electromagnets different from permanent magnet?
Electromagnets are temporary magnets that require an electric current to generate a magnetic field, which can be turned on and off by controlling the current flow. Permanent magnets, on the other hand, retain their magnetism without the need for an external power source. Electromagnets are versatile and can have variable strength, while permanent magnets have a fixed magnetic strength.
Is electromagnets are natural magnets?
The magnetism of an electromagnet is natural (it comes out of the laws of physics), but the magnetism disappears when the electricity is turned off - it is not a permanent magnetism.
Why do cranes use electromagnets instead of permanent magnets?
Cranes use electromagnets because they can be controlled and turned on/off easily by adjusting the electric current. This provides flexibility in lifting and releasing materials. Permanent magnets, on the other hand, have a fixed magnetic strength and cannot be adjusted or controlled.
What advantage do electromagnets have over other magnets?
Electromagnets can be turned on and off by controlling the flow of electricity, while permanent magnets have a fixed magnetic field. This makes electromagnets more versatile and suitable for a wider range of applications. Additionally, electromagnets can produce a stronger magnetic field than most permanent magnets.
What is the difference between permanent magnets and temporary magnets?
One is temporary, the other is more or less permanent.
How are electromagnets different from magnets?
You can turn electromagnets on and off.
Can magnets be turned off?
search this on youtube, there is a video of how to turn off a permanent magnet. they use some wire wrapped around it in a certain position and then put 180 khz of electricity through it
Does permanent magnets have pulling capacity?
Yes, and they can be quite powerful at doing this. The bad thing is that they can be hard to release from the item you are pulling if you can't turn them off "Permanent magnets".
