What is difference between solenoid and a n electromagnet?

What is difference between solenoid and a n electromagnet?


1 Answers

Saurabh Kumar
askIITians Faculty 2400 Points
8 years ago
An electromagnet is a non-permanentmagnet in which the magnetic field is produced by the flow of an electric current through the coil. The magnetic field disappears when the current ceases (or in the case of a permanent electromagnet, the magnetic field is present until a current is applied).
As a current is passed through the coil, small magnetic regions within the material, called magnetic domains, align with the applied field, causing the magnetic field strength to increase. As the current is increased, all of the domains eventually become aligned, a condition called saturation.
The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be rapidly manipulated over a wide range of values by controlling the strength of the electric current. However, a continuous supply of electrical energy is required to maintain the field operative (as noted, the exact reverse is true for a permanent electromagnet).
In applications where a variable magnetic field is not required, permanent magnets are generally superior. (Additionally, permanent magnets can be manufactured to produce stronger fields than an electromagnet of asimilar size.)
Electromagnets are used in many situations where a rapidly- or easily-variable magnetic field is desired. An example of this would be the deflection of charged particle beams (cathode ray tube and mass spectrometer fall into this category).
Magma's capabilities include round electromagnets with diameters from 18mm-300mm and rectangular electromagnets with a length of upto 1000mm.

All electromagnets are configured for a 24v current.

Magma has a set of standard round and rectangular sizes which are detailed in the product sheets on this site. We also specialize in custom-made electromagnets.

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