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Magnets can be divided into electromagnets and permanent magnets.
An electromagnet consists of a iron core surrounded by a coil of wire. When an electric current passes through the wire coil, it will generate a magnetic field, which will be stronger because of the iron core. Iron is not the only material for the core, any ferromagnetic material may be used, some of which are ceramics. If there is no current in the coil, there will be no magnetic field. Have you seen pictures of crane - mounted electromagnets used in scrap yards?
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoMovement. If the two are stationary with respect to each other, no current is generated.
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Why do the number of windings around an electromagnet affect the strength of and electromagnet?
This is because an electromagnet gets its magnetic force from the electrons passing through the wire, the more coils there are the more electrons passing through so the more magnetic power. Obviously this only works to an extent since you would need more voltage and so on.
Does an electromagnet work without a nail?
Yes but you would need a conducting pole of some kind to create the magnetic field.
What device is made from a coil of wire that carries a current and produces a magnetic field?
These devices are called generators, alternators, magnetos, or dynamos. These devices produce electrical energy from mechanical energy. The opposite is a motor which produces mechanical energy from electrical energy.
What creates the magnetic field in an electromagnet?
Question:What creates the magnetic field in an electromagnet?Now all you need to know is the definition of anelectromagnet in order to find the answer.Definition: An electromagnet is a type of magnet in which the magnetic field is produced by the flow of .Answer:TheElectric current make's the magnetic field in anElectromagnet.-Translated intoSpanish-Pregunta: ¿Qué crea el campo magnético en un electroimán?Ahora todo lo que necesitamos saber es la definición de un electroimán con el fin de encontrar la respuesta.Definición: Un electroimán es un tipo de imán en la que se produce el campo magnético por el flujo de.Respuesta: La corriente eléctrica es hacer que el campo magnético de un electroimán.
What does a planet need in order to have Auroras?
A planet needs to have a magnetic field in order to have auroras.
What dose an electromagenet need to work?
As inferred from the name, an electromagnet requires electricity in order to generate a magnetic field.
Does a blender need a electro magnet to work?
Yes, AC motors generate their own magnetic field.
Is an electromagnet likely to be attracted to a magnet?
An electromagnet is simply a device that will create a magnetic field when electricity is run through it (basically a normal magnet, but you need to plug it in). Depending on the magnetic charges of the electromagnet and the regular magnet, it should either attract or repulse like magnets normally do to one another.
Why do the number of windings around an electromagnet affect the strength of and electromagnet?
This is because an electromagnet gets its magnetic force from the electrons passing through the wire, the more coils there are the more electrons passing through so the more magnetic power. Obviously this only works to an extent since you would need more voltage and so on.
Does an electromagnet work without a nail?
Yes but you would need a conducting pole of some kind to create the magnetic field.
Why are cryogens used in mri?
To keep the magnet cool. MRI machines need to generate a very strong magnetic field. They do this using superconducting electromagnet- basically a large coil of wire with a large current passing through it. The magnet must be kept very cold, almost at absolute zero, or it will not superconduct.
How does the variation of excitation of an alternator correct power factor?
The rotor of an alternator need a DC voltage applied to it to generate a magnetic field, this magnetic field will generate the AC power in the AC windings.The AVR(Automatic Voltage Regulator) is regulating this DC voltage so that the magnetic field is strong enough to maintain the output AC voltage. As soon as more current is drawn from the output, this output voltage will drop and a stronger magnetic field is needed to sustain the output voltage, so the AVR step up the exiting voltage to get a stronger magnetic field to compensate for the voltage loss in the AC windings.
How could the electromagnet and the regular magnet generate electricity?
Before going to the answer first I'd like to tell that Magnet alone cannot produce electricity. We need an armature. Armature contains poles. Consider that armature is placed in between the magnetic poles(North and south poles) and let it face any direction. Due the magnetic field the armature tend to move towards anyone pole in order to make its direction coherent with the magnetic field direction. It results that armature is aligned with the magnetic field direction(lets say facing North). Then the other pole(South pole) tend to attract the armature to align in its direction say(facing South). This results in rotation of the armature in the magnetic field. due to this rotation of armature cuts the flux there emf is produced. This emf cause the current in that construction. This is how the electricity is produced using any magnet called Electromagnet or Permanent magnet.
How much of a magnetic field Guss do you need to blow a cars computer?
how much of a magnetic field guss do i need to blow a cars computer
What is a electromagnet and what does it need to properly function?
A powerful magnet that only creates a magnetic field when a massive amount of power cycles through the magnet. To properly function, the magnet needs to be connected to a powerful source of electricity.
Are electromagnets used in cameras?
Camera magnets are actually electromagnets; the magnetic field on an electromagnet is only there when you need it. They work like magnets everywhere else do; they are used in place of springs.
What device is made from a coil of wire that carries a current and produces a magnetic field?
These devices are called generators, alternators, magnetos, or dynamos. These devices produce electrical energy from mechanical energy. The opposite is a motor which produces mechanical energy from electrical energy.
