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单词	字典	翻译
electromagnets	查看　electromagnets　在百度字典中的解释	百度英翻中〔查看〕
electromagnets	查看　electromagnets　在Google字典中的解释	Google英翻中〔查看〕
electromagnets	查看　electromagnets　在Yahoo字典中的解释	Yahoo英翻中〔查看〕

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Electromagnet - Wikipedia
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current Electromagnets usually consist of wire (likely copper) 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
Electromagnet | Uses, Properties Applications | Britannica
electromagnet, device consisting of a core of magnetic material surrounded by a coil through which an electric current is passed to magnetize the core An electromagnet is used wherever controllable magnets are required, as in contrivances in which the magnetic flux is to be varied, reversed, or switched on and off
How Electromagnets Work - HowStuffWorks
Whether they're sorting out scrap metal or helping us unlock the secrets of the universe, electromagnets are pretty nifty devices What's so great about magnetism on demand? We'll electrify you with the details
Electromagnets - AQA What is an electromagnet? - BBC
Electromagnets are used in devices such as electric bells, and door locks that can be controlled remotely Learn about and revise electromagnetism, the motor effect and its applications in
Electromagnets – Electricity – Magnetism
Explore the fascinating world of electromagnets, their construction, operation, applications, environmental impact, and future prospects Electromagnets, a fundamental element in the field of electromagnetism, offer a multitude of applications in modern technology
What is an Electromagnet? Uses, Diagram, Properties . . .
An electromagnet is a device which derives its magnetism by current flowing through a conductor An electromagnet is an artificial magnet in which the magnetic field is developed with the help of electric current (Remember the magnetic effect of current) A magnet always attracts ferromagnetic materials

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