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Which kind of magnet has the same magnetic field as the long coil of wire?
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∙ 8y ago
copper
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∙ 8y ago
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How is an electromgnet and a bar magnet different?
The bar magnet is what is termed a permanent magnet . This means that it is "always on" and can be used to do things like pick up paper clips. The electromagnet is created by winding a coil of wire about a ferromagnetic core and running a direct current through that coil. Only when the current is flowing will the electromagnet be operating. With the current switched off, the magnetic field around the coil of wire disappears, and the power of the electromagnetic disappears as well.There are some "fine points" associated with a further extension of this post, but the basic answer to the question is as written.A bar magnet is made from magnet materials and has a magnetic field at all times. An electromagnetic is not naturally magnet and only has a magnetic field when electricity is passed through it.
What kind of magnet has a field that is about the same shape of Earth's magnetic field?
Uranus NOVEL STARS ANSWER: None of these
Do all magnetic fields have the same shape?
I'm not sure what "shape" means as applied to a magnetic field, which is not a physical object. To the extent I can conceive of them having a shape, the shape depends on the shape of the magnet, or more precisely upon the geometry of the poles of the magnet.
What kind of movement creates electrical energy?
Movement of a wire in a magnetic field. If a loop of wire is moved in a magnetic field, it produces a voltage across its ends that can be measured on a voltmeter, resulting from the change in the magnetic flux linking the coil. If a resistor is connected across the ends, a current will flow and a force is needed to move the wire in the magnetic field. The energy supplied by the movement of the coil appears as electrical energy in the resistor, heating it up. That is the principle of an electric generator.
What is the direction of the magnetic field of a bar magnet?
The field lines would leave one pole (end of the magnet) and then curve around one side to come back to the other pole in kind of a semi-oval. Picture two ovals side by side, then picture the bar magnet placed between them, overlaying the long edges of the ovals where the ovals touch. This can be observed by pouring some iron filings onto a piece of paper and then placing a bar magnet underneath the paper. The filings will line up along the field lines providing a visual picture.
What kind of field is around a magnet?
the magnetic field
How is an electromgnet and a bar magnet different?
The bar magnet is what is termed a permanent magnet . This means that it is "always on" and can be used to do things like pick up paper clips. The electromagnet is created by winding a coil of wire about a ferromagnetic core and running a direct current through that coil. Only when the current is flowing will the electromagnet be operating. With the current switched off, the magnetic field around the coil of wire disappears, and the power of the electromagnetic disappears as well.There are some "fine points" associated with a further extension of this post, but the basic answer to the question is as written.A bar magnet is made from magnet materials and has a magnetic field at all times. An electromagnetic is not naturally magnet and only has a magnetic field when electricity is passed through it.
What kind of magnet has a field that is about the same shape of Earth's magnetic field?
Uranus NOVEL STARS ANSWER: None of these
Can a permanent magnet be turned off and on?
Electromagnet. it is a piece of metal (usually iron) that is wrapped in copper wire. it is turned on by putting electricity through the copper wire. it then producces a magnetic field when electricity is run through it.
Do all magnetic fields have the same shape?
I'm not sure what "shape" means as applied to a magnetic field, which is not a physical object. To the extent I can conceive of them having a shape, the shape depends on the shape of the magnet, or more precisely upon the geometry of the poles of the magnet.
How many atoms are in a magnet?
Even a single atom (if it is the right kind of atom) can generate a magnetic field, so there can be any number of atoms in a magnet, from one onwards to very large numbers, such as 1025.
What type of electricity is produced by rotating a coil at a steady rate in a steady magnetic field?
Plain old electricity. There's only one kind.
What kind of movement creates electrical energy?
Movement of a wire in a magnetic field. If a loop of wire is moved in a magnetic field, it produces a voltage across its ends that can be measured on a voltmeter, resulting from the change in the magnetic flux linking the coil. If a resistor is connected across the ends, a current will flow and a force is needed to move the wire in the magnetic field. The energy supplied by the movement of the coil appears as electrical energy in the resistor, heating it up. That is the principle of an electric generator.
How is strength of a magnet affected by cardboard?
Magnetic field are unaffected by those materials. Magnets and electrical fields in general are only effected by other magnetic fields. Think of a compass that is brought near another magnet. Magnetic fields are exponential in strength meaning that they are most strong at the surface and quickly fade with distance. Dont have the equation but its simple and straight forward. So if you want a magnetic field to extend through a thick (5mmm) cardboard or plastic you will need larger more powerful magnets such as rare earth or neodymium magnets. Its really about the strength of the magnet and the distance of the magnetic field. Hope that helps.
What kind of force does a magnent give off?
Magnet* does*, and i gives off magnetic energy.
How does electricity cause magnetism?
Changing the amount of magnetic field (known as "flux") through a conductor exerts a force on charged particles (electrons in the wire). A change in magnetic field strength in a region of space induces an electric field which circles the magnetic field lines, surprisingly whether or not there is a conductor there or not. It turns out that magnetism and electricity are inherently linked, they are kind of manifestations of the same thing. If "something" has the property of electric charge, it creates an electric field. If that something moves, it creates a magnetic field.
What type of metal can repel a magnet?
All metals can repel a magnet. The degree to which they do so is dependent on whether they are ferromagnetic, paramagnetic, or diamagnetic.A ferromagnetic metal is one which has a magnetic field regardless of whether or not they are subjected to an applied or external magnetic field. These are often called permanent magnets. The strength of their magnetic field varies depending on the strength of the external magnetic field, but has a limit outside of the external field. Iron is an example of a ferromagnetic metal.A paramagnetic metal is one which has a magnetic field only when subjected to an applied or external magnetic field. The strength of a paramagnetic metal's magnetic field tends to vary proportionally with the external magnetic field, and so these are often the strongest magnets that we see. An electromagnet is the easiest way to conceptualize the way a paramagnetic metal works. When an electromagnetic circuit is turned on, it's a magnet, when it's turned off, it's not. Tungsten is an example of a paramagnetic metal.Diamagnetism is a property of all materials, not just metals. This property is kind of hard to explain classically, so just think of it as a material's magnetic field created, when subjected to an external magnetic field, because of all of the material's electrons being pulled one way, and all of the material's protons being pushed the other way. The strength of a magnetic field from a purely diamagnetic material is farweaker than that of a paramagnetic or ferromagnetic material's magnetic field.
