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Electromagnet - Electromagnets and permanent magnets

A Wisdom Archive on Electromagnet - Electromagnets and permanent magnets

Electromagnet - Electromagnets and permanent magnets

A selection of articles related to Electromagnet - Electromagnets and permanent magnets

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Electromagnet 		Index of Articles
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Electromagnet, Electromagnet - Devices that use electromagnets, Electromagnet - Electromagnets and permanent magnets, Electromagnet - Force on ferromagnetic materials, Electromagnet - Introduction, Dipole magnet Electro magnet used in Particle accelerators, Electromagnetism, Quadrupole magnet Electro magnet used in Particle accelerators

ARTICLES RELATED TO Electromagnet - Electromagnets and permanent magnets

Electromagnet - Electromagnets and permanent magnets: Encyclopedia II - Electromagnet - Electromagnets and permanent magnets

The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be rapidly manipulated over a wide range by controlling the electric current. A disadvantage is that if an electromagnet with a ferromagnetic core is turned on and off again, the core retains some residual magnetization due to hysteresis. This magnetic field can persist indefinitely. As more electricity is passed through the electromagnet ...

See also:

Electromagnet, Electromagnet - Introduction, Electromagnet - Electromagnets and permanent magnets, Electromagnet - Devices that use electromagnets, Electromagnet - Force on ferromagnetic materials

Read more here: » Electromagnet: Encyclopedia II - Electromagnet - Electromagnets and permanent magnets

Electromagnet - Electromagnets and permanent magnets: Encyclopedia II - Electromagnet - Devices that use electromagnets

Electromagnets are used in many situations where a rapidly or easily variable magnetic field is desired. Many of these applications involve deflection of charged particle beams; the cathode ray tube and mass spectrometer fall into this category. Other devices cause electromagnetic fields to interact with fields from permanent magnets and produce forces. Electromagnetic actuators take advantage of the fact that, if the core of a solenoid is displaced toward one end of the coil, a force will occur tending to push the core farther in tha ...

See also:

Electromagnet, Electromagnet - Introduction, Electromagnet - Electromagnets and permanent magnets, Electromagnet - Devices that use electromagnets, Electromagnet - Force on ferromagnetic materials

Read more here: » Electromagnet: Encyclopedia II - Electromagnet - Devices that use electromagnets

Electromagnet - Electromagnets and permanent magnets: Encyclopedia II - Electromagnet - Force on ferromagnetic materials

Computing the force on ferromagnetic materials is, in general, quite complex. This is due to fringing field lines and complex geometries. It can be simulated using finite element analysis. However, it is possible to estimate the maximum force under specific conditions. If the magnetic field is confined within a high permeability material, such as certain steel alloys, the maximum force is given by: Where: F is the force in newtons B is the magnetic field in teslas A is the area of the pole faces in square ...

See also:

Electromagnet, Electromagnet - Introduction, Electromagnet - Electromagnets and permanent magnets, Electromagnet - Devices that use electromagnets, Electromagnet - Force on ferromagnetic materials

Read more here: » Electromagnet: Encyclopedia II - Electromagnet - Force on ferromagnetic materials

Electromagnet - Electromagnets and permanent magnets: Encyclopedia II - Electromagnet - Introduction

The simplest type of electromagnet is a coiled piece of wire. A coil forming the shape of a straight tube (similar to a corkscrew) is called a solenoid; a solenoid that is bent so that the ends meet is a toroid. Much stronger magnetic fields can be produced if a "core" of paramagnetic or ferromagnetic material (commonly iron) is placed inside the coil. The field produced by the coil causes the iron to magnetize and generate a field of its own. This field can be hundreds or thousands o ...

See also:

Electromagnet, Electromagnet - Introduction, Electromagnet - Electromagnets and permanent magnets, Electromagnet - Devices that use electromagnets, Electromagnet - Force on ferromagnetic materials

Read more here: » Electromagnet: Encyclopedia II - Electromagnet - Introduction

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Electromagnet 		Index of Articles
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