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Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of copper wire wound into a coil. A current through the wire creates a magnetic field which is concentrated along the center of the coil. The magnetic field disappears when the current is turned off. The wire turns are often…

History, Applications & Measurement

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Component type
Magnet
Invention year
1824
Inventor
William Sturgeon
Working principle‍
Oersted's law

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Overview

History

Applications of electromagnets

Simple solenoid

Physics

Side effects

High-field electromagnets

Advanced semantic analysis

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Map overview Semantic statistics

Electromagnet

Nodes132
Edges131
Triples128
Avg. degree1.98
Density0.015152
Components1

How this topic connects Entity context

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Electromagnet

Top relations

related to Bitter electromagnets · 14
Electromagnet → August, Bitter, Both, Florida, Francis Bitter, Instead, June, Laboratory, Lorentz, National High Magnetic Field, Tallahassee, The, Therefore, This
related to history · 14
Electromagnet → André-Marie Ampère, British, Danish, French, Hans Christian, His, However, In, Insulated, Sturgeon, Sturgeon's, The, When, William Sturgeon
related to Core losses · 10
Electromagnet → AC, Another, Any, Eddy, From Faraday's, In, Since, The, This, To
related to Inductive voltage spikes · 9
Electromagnet → An, Any, But, If, More, The, This, When, With
related to Superconducting electromagnets · 9
Electromagnet → Current, However, Instead, MRI, Superconducting, The, These, They, When
related to Ohmic heating · 7
Electromagnet → DC, For, In, NI, Since, Some, The
related to Force between electromagnets · 6
Electromagnet → Each, In, NIA, The, This, To
related to Lorentz forces · 6
Electromagnet → In, It, Lorentz, The, The Lorentz, This
related to Magnetic circuit · 6
Electromagnet → Fig, In, Iron, Most, Since, Within
related to Physics · 5
Electromagnet → Ampere's, An, If, The, To

Important terminology Word statistics

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Important terminology

magnetic field current core electromagnets wire force magnet coil displaystyle windings used solenoid iron energy material magnets plunger turns around

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
ElectromagnetComponent typeMagnet1.00infobox
ElectromagnetInvention year18241.00infobox
ElectromagnetInventorWilliam Sturgeon1.00infobox
ElectromagnetWorking principle‍Oersted's law1.00infobox
Electromagnetis atype of magnet in which the magnetic field is produced by an electric current0.90text
Electromagnetis auniformly wound solenoid and plunger0.90text
ironinstance ofThe wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material0.80text
scrap ironinstance ofElectromagnets are also employed in industry for picking up and moving heavy iron objects0.80text
steelinstance ofElectromagnets are also employed in industry for picking up and moving heavy iron objects0.80text
valvesMagnetic recordinginstance ofMotors and generatorsTransformersRelaysElectric bells and buzzersLoudspeakers and headphonesActuators0.80text
data storage equipmentinstance ofMotors and generatorsTransformersRelaysElectric bells and buzzersLoudspeakers and headphonesActuators0.80text
soft ironinstance ofand the plunger is made of a material0.80text

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