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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.
What is the reason that a cold magnet is stronger than a hot or room temperature magnet?
A cold magnet attracts more than a hot magnet. This helps the flow of electricity which therefore helps the electric field, which therefore helps the magnetic field. They use cold magnets to power the LHC which collides hydrogen atoms. Obviously the cold magnet is very attracting.
Why do some electromagnets repel rather than attract?
SOME Electromagnet like permanent magnets have two poles(north/south). Likewise the rules for SOME Electromagnets are the same as those of a permanent magnet(same poles repel, different poles attract).
Why are some pieces of iron more magnetic than others?
It is because some of the metallic objects are more magnetic than each other(more iron than each other).
Why is a syringe more useful than a balloon to cunduct this experiment?
Because you can measure the amount of gas
Why will an electromagnet be able to pick up more steel cans than a permanent magnet?
An electromagnet is a stronger magnet.
How is an electromagnet different a bar magnet?
a electromagnet is bigger than a bar magnet
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.
Would an electromagnet be more useful than a permanent magnet?
It depends on the application. Electromagnets can be turned on and off, allowing for more control, while permanent magnets offer constant magnetic strength. Electromagnets are often preferred in situations where the magnetic force needs to be adjusted or varied.
Why is an electro magnet better than a normal magnet?
An electromagnet is made by wrapping coiled wire around a piece of metal. When a current is applied, it creates a magetic field. The main advantage is that an electromagnet can be turned off by breaking the circuit. That's how those big magnet cranes at junkyards can let go of the metal. You can easily make a fun electromagnet project that kids love. Just coil a wire around a bolt, and hook up the ends to both sides of a battery. A 6 volt flashlight battery works great. More coils means a stronger magnet.
What is an advantage of using an electromagnet rather than a regular magnet?
A regular magnet, "Earth Magnet", can be very strong, the disadvantage of using them is that you cannot turn off the magnet. Electromagnet uses the electricity of a common battery and can be turned on and off, such as for switches in a circuit board.
Is an electromagnet stronger than a permanent magnet?
Not necessarily. The key difference between a permanent magnet and an electromagnet is the a permanent magnet does not change whereas an electromagnet's magnetic feild can be altered by varying the current through it. This means that electromagnets are more useful because they can be turned on or off, turned up or down or be put in 'reverse'.
How strong is an electromagnet compared to a permanent magnet?
An electromagnet is typically stronger than a permanent magnet because it can be adjusted by changing the electric current flowing through it. Permanent magnets have a fixed magnetic strength that cannot be easily altered.
Why would a bar magnet pick up more paper clips than an eletromagnet?
?? lol i dont know what electro magnets u have been using! if it is a homemade electro magnet, try increasing the coils in the wire ro the power u are putting into it. does the bar magnet (permanent magnet) have a larger surface area than the electro one? also, you do know that the magnetic potential of electro and permanent magnets vary right? they use electro magnets in junk yards that are capable of lifting scrap cars with eaaase
Is a electro magnet stronger than a normal magnet?
it depends on how strong the electromagnet is. you basically choose how powerful to make an electromagnet when your designing one. one used for picking up cars at a junk yard is gonna be more powerful than one used in a kitchen appliance. and "normal magnet's" is not a good term for all other types of magnets. there are lots of different types of materials that can be magnetized, all of them are stronger or weaker then the others, all of them can also be made to different strengths, and all of them lose strength over time. the usefulness of an electromagnet is that they can be turned on and off depending on whether or not they have electricity running through them. http://en.wikipedia.org/wiki/Magnet
Why is an electromagnet better that a bar magnet?
An electromagnet can be turned on and off by controlling the electric current, allowing for greater control and versatility in its applications. Additionally, the strength of an electromagnet can be easily adjusted by changing the current, making it more powerful than a bar magnet. Electromagnets can also be designed to have specific shapes and sizes to suit different needs.
What is the difference between magnets and electromagnet?
an electromagnet is a magnet which is activated by electricity and it ceases to be a magnet once the electric supply is stopped whereas a magnet is a natural magnet which does not need electricity and continues to be a magnet whether it is supplied by electricity or not.
