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Q.

When is an electromagnet used?

Tags: education, science
Asked by narendra sharma, 24 Dec '12 12:48 pm
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Answers (9)

 
1.

Electro-magnets are part of your automobile's electrical system as well. The starter motor uses electro-magnets as do all electric motors, the ignition coil is little more than specialized electro-magnets, the automatic door actuators are electro-magnets as are the injectors and any relays.
Answered by Quest, 24 Dec '12 11:37 pm

 
  
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2.

Electro-magnets are part of your automobile's electrical system as well. The starter motor uses electro-magnets as do all electric motors, the ignition coil is little more than specialized electro-magnets, the automatic door actuators are electro-magnets as are the injectors and any relays.
Answered by sundaram, 29 Dec '12 02:31 am

 
  
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3.

Electro-magnets are part of your automobile's electrical system as well. The starter motor uses electro-magnets as do all electric motors, the ignition coil is little more than specialized electro-magnets, the automatic door actuators are electro-magnets as are the injectors and any relays.
Answered by anantharaman, 24 Dec '12 07:08 pm

 
  
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4.

Short and simple answer,, or basic utility
RELAYS..
now apply it in numerous ways.

secondly Solonoid in cars for self starter.
Answered by sharad sharad, 24 Dec '12 01:51 pm

 
  
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5.

Electromagnets have several uses and practical applications. They can be found in various everyday electronics and are also used for industrial purposes ourselves. You can say that the electromagnet made much of the modern age possible harnessing electricity as a practical force in the same way that mankind used windmills and dams to harness wind and water. Here are some of the ways that electromagnets are used.First, there are motors and generators. The discovery of the electromagnet made possible the invention of electric motors and generators. Both of these work on a scientific principle called electromagnetic induction. This phenomenon was discovered by the scientist Michael Faraday. Electromagnetic induction takes advantage of the fact that a moving electrical current creates a magnetic fields and a moving magnetic field creates an electrical current. This is essentially how electric motors and generators work. In any electrical appliance the motor is moved by the magnetic field p ...more
Answered by aflatoon, 24 Dec '12 01:12 pm

 
  
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6.

To generate temporary magnetism in a ferro magnetic metal so that it acts as magnet and does the job of attracting ferrous particles towards it. normally used to separate the ferrous contamination from any product, especially food products as per FDA norms. is it generated by applying AC power to the solenoid type strucutre of the ferro magnetic metal. removal of Ac source removes the magnetism. however, if the AC power continues to stay for a very long duration, the ferro magnetic metal can get converted in to permanent magnet.
Answered by Manoj M, 24 Dec '12 12:56 pm

 
  
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7.

Electro-magnets are part of your automobile's electrical system as well. The starter motor uses electro-magnets as do all electric motors, the ignition coil is little more than specialized electro-magnets, the automatic door actuators are electro-magnets as are the injectors and any relays.

If your computer uses a hard-drive, electro-magnets are used to position the read/write head, to spin the disk and to write to the head. An electro magnet is also used to spin the motor of the cooling fan(s).
Answered by iqbal seth, 24 Dec '12 12:56 pm

 
  
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8.

Electromagnet device in which magnetism is produced by an electric current. Any electric current produces a magnetic field, but the field near an ordinary straight conductor is rarely strong enough to be of practical use. A strong field can be produced if an insulated wire is wrapped around a soft iron core and a current passed through the wire. The strength of the magnetic field produced by such an electromagnet depends on the number of coils of wire, the magnitude of the current, and the magnetic permeability of the core material; a strong field can be produced from a small current if a large number of turns of wire are used. Unlike the materials from which permanent magnets are made, the soft iron in the core of an electromagnet retains little of the magnetism induced in it by the current after the current has been turned off.

Electro-magnets are part of your automobile's electrical system as well. The starter motor uses electro-magnets as do all electric motors, the ignition coi ...more
Answered by Rose, 24 Dec '12 12:51 pm

 
  
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