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An electromagnetic device is any device that uses electromagnets to operate. Some examples include: electric motors, electric generators (alternators), speakers, etc. An electromagnet is typically a coil of wire with an electric current running through it which generates a magnetic field according to laws and principles developed by Ampere, Faraday, and Maxwell among others. Electromagnetism was discovered by Oersted in 1820.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoElectronic devices are devices which involve the control of the flow of electrons by means of other electrons, rather than by mechanical means. A physical switch, consisting of a piece of metal which touches another piece of metal to pass along a flow of electrons is NOT an electronic device, but rather is an ELECTRICAL device. A TRANSISTOR, in which a small voltage controls a larger flow of electrons, IS an ELECTRONIC device. A vacuum tube is also an ELECTRONIC device, because a small voltage on the grid of the tube controlls a larger current of electicity through the tube.
and which new one is important and explain why?
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What are some electromagnetic devices?
electromagnetic devices are devices that work on electricity but are magnetic
How is Sound produced in a audio devices?
Physical vibrations of speaker cones or metal plates by electromagnetic coils connected to the audio output AC signals from the audio amplifiers.
How do you prevent signal interference with other electrical devices?
It depends on the type of interference, but most shielded cables are used in a copper cable setup. You could also use fiber optic cable if concerned about electrical devices but it might prove too expensive.
What devices use electromagnetism?
Many electrical and electronic devices use electromagnets, including telephones, sound speakers, maglev trains, junkyard cranes, and doorbells. Electric motors create an electromagnetic field around a permanent magnet, as do the generators used to create electric power.
How are electromagnetic fields different from a magnetic field?
Electromagnetic fields can be varying in intensity. A magnet is static.
What are some electromagnetic devices?
electromagnetic devices are devices that work on electricity but are magnetic
What is put in the core of electromagnetic induction devices?
The answer is iron.
Which type of waves from the electromagnetic spectrum are used in heat lamps and heating sensing devices?
Infrared waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices.
Which type of wave from the electromagnetic spectrum are used in heat lamps and heat sensing devices?
Infrared waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices.
What is electromagnetic fog?
Nearly all electrical devices will emit some electromagnetic radiation. In some cases this can be strong enough to affect nearby sensitive instruments or radio receivers and can be the result of multiple devices operating in a small area.
A fluctuation in voltage levels caused by other devices on the network or electromagnetic interference is called what?
noise
What is maser and laser?
maser : any of several devices that amplify or generate electromagnetic waves, especially microwaves.
Does the Air Force really use microwaves or electromagnetic frequency devices to cause people to have heart attacks?
No.
What has the author Herbert H Woodson written?
Herbert H. Woodson has written: 'Electromechanical dynamics' -- subject(s): Dynamics, Electromagnetic devices, Electromagnetism, Electromechanical devices
What has the author Tore Wessel-Berg written?
Tore Wessel-Berg has written: 'Electromagnetic and Quantum Measurements - A Bitemporal Neoclassical Theory' 'Electromagnetic and quantum measurements' -- subject(s): Electromagnetic measurements, Physical measurements, Quantum theory 'Theoretical investigation of bulk semiconductor techniques for application to phased array microwave devices' -- subject(s): Industrial applications, Microwave devices, Semiconductors
How do wireless communication system and and receive signals?
on electromagnetic wavesThrough Tx and Rx devices which send signal to the station
What is the relation between medical and electromagnetic?
There is no relation between medical uses of electromagnetic energy and alternative devices. There are no available scientific evidence to support claims in treating any diseases with the use of electromagnetism.
