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Why will current flow in a large coil of wire waved around in the air with no magnets in the vicinity?
Wiki User
∙ 6y ago
Because you are moving it through the earth's magnetic field.
Jonathon Witting
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Can strong magnets harm people?
No, a magnet is a it. Someone has to do something with it to harm people. Otherwise, really strong magnets shouldn't be around large objects that are attracted by magnetism. So its the matter the fact what you do with it.
What types of magnets are produced by running electrical currents through a soft iron core?
temporary magnets Incorrect, it's electromagnetic.
How is hydroelectric energy created?
Hydroelectricity is a method of producing electricity from flowing water. A large area of water - typically held behind a dam - is forced (by it's own weight) through a turbine generator, which makes the generator spin. When the generator spins, magnets attached to the turbine portion move past magnets mounted on the generator walls just outside the turbine. This produces electrical current, which is harnessed as electricity.
Are smaller magnets stronger than larger magnets?
yes.in bigger magnets there are more magnetisom This is not true! In many cases larger magnets are stronger than smaller ones but not in all. I urge you to do research on reputable sites which can offer accurate answers to your questions. Magnet strength and effectiveness rely on size, age, gauss ratings as well as several other aspects. But do not take my word, please research further.
What is a magnet used for in science?
Ooh, lots of things. Magnets are used everywhere. Electric motors use both permanent magnets and electromagnets made by electric current, for instance. The most impressive and scary use for magnets in science is in Linear Accelerators like the one at the Large Hadron Collider in Switzerland and France. Here, huge, scary magnets, magnets that need to be cooled with liquid helium to within 2 degrees of the coldest temperature that can exist, anywhere in the universe, control a pair of beams of tiny particles and make them travel at 299,792 km per second, or just a tiny bit slower than light itself. At that speed they make the two beams collide with each other. From what results from these collisions, they hope to find out, for instance, what makes stuff heavy, and find out more about how the universe works.
Do magnets effect goldfish?
I am not aware of magnets having any effect on goldfish. Maybe a large electro magnet created by passing windings around a tank then applying current through the winding could have an effect but a simple magnet placed on or into a fish tank should have no effect on the fish whatsoever.
Can strong magnets harm people?
No, a magnet is a it. Someone has to do something with it to harm people. Otherwise, really strong magnets shouldn't be around large objects that are attracted by magnetism. So its the matter the fact what you do with it.
Why is excitation necessary for synchronous generators?
generators work by rotating a magnetic field thru a wire shell or by rotating wire thru a stationary magnetic field (think of a small DC motor with magnets around the shell) since large generators dont have magnets in them (its not very efficent)you have to send a flowing current thru the rotating coils to produce the magnetic field. this induces current in the stator and you have a generator..of course the same effect is produced by inducing a current in the stator and pulling the output from the rotor.
Natural magnets are rocks with large amounts of?
iron
What influence did Cleopatra have on the world?
Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.Cleopatra was a minor queen of a crumbling dynasty. She had no influence on the world at large. Her only sphere of influence was Egypt, ts immediate vicinity, and upon individuals.
Where can someone recycle ceramic magnets?
Industrial ceramic magnets otherwise known as large rotating drum magnets, are used by the metal scrap and recycling industries. The magnets are used to separate and process metals. If you are looking to recycle one of these magnets you can find a company that uses them for recycling.
Where can you get cow magnets from?
Your local feedstore or your local large animal veterinarian.
Where can I buy magnets for advertising in large orders?
You can buy a magnet for advertising in large orders at magnet heaven dot com. At this website, you will find plenty of cheap refrigerator magnets for advertising and are budget friendly.
Why electromagnets over permanent magnets for a large dc machine?
The flux density of an electromagnet can be easily controlled. It's also easy and cheap to produce a large flux density with an electromagnet which is necessary for such large dc motors. Permanent magnets are generally expensive. For such a large motor,a very large permanent magnet will be needed for that motor which will not be ideal.AnswerElectromagnets are more powerful than temporary magnets, and -as pointed out above- their flux density can be controlled.
How can a magnet lose it's magnetic?
Permanent magnets are magnetic because of things called "domains." Domains are like mini-magnets in the large magnet - when they all line up perfectly, you get a noticeable magnetic field. When they don't, the domains cancel each other out, and hence, do not create a magnet. To demagnetize a permanent magnet, the domains must come out of alignment - this is most easily accomplished by imparting a large force to the magnet (hitting it with a hammer) Alternatively, electromagnets are created via moving charges in a coil of wire (electric current). These magnets are designed to be turned on and off, so demagnetizing an electromagnet is as simple as switching off the current.
What does a genarator rotate large coils of wire past?
Large Magnets, passing through magnetic fields which become electricity.
Can magnets lift up things?
Magnets are better used in lifting hot metals. Lifting magnets are the type of magnets that are used to lift high temperature magnetic materials.
