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When the electric current is switched off the metal sticking to the electromagnet drops offexplain why this happens?
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What does a current carrying coil with an iron core make?
A choke, an electromagnet, an electric motor stator, an electric motor rotor, etc. all depending on details of construction and use that are unstated in the question.
Is a horseshoe electromagnet bar magnet or a magnet pole a example of a temporary magnet?
An electromagnet is temporary because the field disappears when the current is switched off.
What is the difference from a normal magnet to an electromagnet?
An Electromagnet is magnetic..... It can also be switched between positive and negative by the power source being turned around(battery)
Is a electromagnet only charged when electric current passes through?
Basically, yes. However, especially when the electromagnet uses iron, it will most likely have some residual magnetism when the current is switched off. Note: You shouldn't used the word "charged" in this context. That refers to electrical charges, and is not usually used for magnetism.
How is a person protected from an electric shock when the heater is switched on?
we can protected from an electric shock by wearing rubber sleepers.
What does a current carrying coil with an iron core make?
A choke, an electromagnet, an electric motor stator, an electric motor rotor, etc. all depending on details of construction and use that are unstated in the question.
What is a magnet created using electric current?
An electromagnet. Unlike other magnets it can be switched on and off.
What will happen if you put a compass next to an electromagnet that is switched?
the compass's needle will point at the electromagnet
Will iron filing get attracted to an electromagnet when it is switched on?
Yes
What are two advantages of a natural magnet over electromagnet?
A natural magnet is permanent - an electromagnet loses its power when it's switched off.
Is a horseshoe electromagnet bar magnet or a magnet pole a example of a temporary magnet?
An electromagnet is temporary because the field disappears when the current is switched off.
What is the difference from a normal magnet to an electromagnet?
An Electromagnet is magnetic..... It can also be switched between positive and negative by the power source being turned around(battery)
Is a electromagnet only charged when electric current passes through?
Basically, yes. However, especially when the electromagnet uses iron, it will most likely have some residual magnetism when the current is switched off. Note: You shouldn't used the word "charged" in this context. That refers to electrical charges, and is not usually used for magnetism.
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.
If all electric appliances had to be switched to non-electric items what would they be?
Non-electric appliances.
What is the main benefit of a electromagnet?
the main benefit of a electromagnets is that they are small, light ,and use a low amount of electricity All electric motors convert electricity into a magnetic field that turns a rotor. The kinetic energy is instant and the space condensed. Alterative answer: Their magnetism can be switched on and off.
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
