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Magnetism
Magnetism

... MAGNETIC INDUCTION • Electromagnetic induction is the production of an electrical potential difference (or voltage) across a conductor situated in a changing magnetic field. • Michael Faraday was the first to describe this phenomenon. • http://thekidshouldseethis.com/post/80799274938 ...
L1 in class - The College of Engineering at the University of Utah
L1 in class - The College of Engineering at the University of Utah

... article. See Lab website (linked to class website). If you have a laptop with Word or similar, please bring it. OK to go to any lab section (even if not signed up), turn in work to you assigned TA. • Office hours today will be abbreviated (end at 1045). Email me if you need help. ...
Unit IIA Electricity and Magnetism
Unit IIA Electricity and Magnetism

Name ______ period __
Name ______ period __

... 3. Magnetic Force - the ____________________ __________ exerted by magnets. It depends on: * the _______________ of the magnet * the ___________________ an object is from the magnet 4. Magnetic Poles - Magnets have a pair of _____________, a north pole and a south pole. Like poles _____________ (S/S ...
Transformers and Generators - juan
Transformers and Generators - juan

Physics Gang Signs Review
Physics Gang Signs Review

... Faraday’s Law says that you can create (induce) more voltage by 1) moving the B-field faster 2) moving it into and out of more coils of wire **the amount of current produced by electromagnetic induction depends not only on the induced voltage but the resistance of the coil and circuit to which it’s ...
forcibly push - Cloudfront.net
forcibly push - Cloudfront.net

... preceding is to focus on fields not currents and voltages. Fields are not encumbered by wires. The whole electricity/magnetism thing was officially unified by James Clark Maxwell in the 1860’s: “ A magnetic field is created in any region of space in which an electric field is changing with time. The ...
Electromagnets - Cornell Center for Materials Research
Electromagnets - Cornell Center for Materials Research

Phy2140 Exam 2 SpSu2..
Phy2140 Exam 2 SpSu2..

... 8. There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L, then the net magnetic torque acting on the loop is: ...
tcom 308-3-Inductors
tcom 308-3-Inductors

Advanced Higher Physics - stuckwithphysics.co.uk
Advanced Higher Physics - stuckwithphysics.co.uk

... individual electrons in a conductor experience a force, F = B I l sin, causing them to move ...
electrom - studylib.net
electrom - studylib.net

... Students will conduct the Vernier Physical Science with CalculatorsElectromagnets: Winding Things Up using the TI-83 Graphing calculator and a magnetic field sensor.  Pre-Lab 1. Demagnetize the iron nails beforehand by striking them on something firm, such as a ring stand base. 2. Use rubber or pl ...
1) L
1) L

2011 Ignition Coil Simulation with Flux CN62
2011 Ignition Coil Simulation with Flux CN62

... The encouraging results obtained with the transient magnetic application of Flux enable us to consider improving the model through collaboration between CEDRAT and Valeo. A more precise model will improve the correlation between simulation and measurements. In the second step, the analysis will focu ...
Chapter 17 - Northern Highlands
Chapter 17 - Northern Highlands

...  A coil concentrates the magnetic field at its center.  A solenoid is a coil with many turns.  Coils are also used in speakers, electric motors, electric guitars, and almost every kind of electric appliance that has moving parts. ...
Induction Applications
Induction Applications

... Chapter 20.6  20.8 ...
Electromagnetic Induction(EMI)
Electromagnetic Induction(EMI)

... But wait…to have induction there must be a change in the magnetic field (therefore a change in the magnetic flux)!! ...
EMI (97-03)
EMI (97-03)

PHYS_3342_101811
PHYS_3342_101811

Magnetic Circuits
Magnetic Circuits

Using Electricity and Magnetism
Using Electricity and Magnetism

GENERATORS AND TRANSFORMERS
GENERATORS AND TRANSFORMERS

generators and transformers
generators and transformers

Electromagnet
Electromagnet

Electromagnets and Induction
Electromagnets and Induction

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Magnetic core

A magnetic core is a piece of magnetic material with a high permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets, transformers, electric motors, generators, inductors, magnetic recording heads, and magnetic assemblies. It is made of ferromagnetic metal such as iron, or ferrimagnetic compounds such as ferrites. The high permeability, relative to the surrounding air, causes the magnetic field lines to be concentrated in the core material. The magnetic field is often created by a coil of wire around the core that carries a current. The presence of the core can increase the magnetic field of a coil by a factor of several thousand over what it would be without the core.The use of a magnetic core can enormously concentrate the strength and increase the effect of magnetic fields produced by electric currents and permanent magnets. The properties of a device will depend crucially on the following factors: the geometry of the magnetic core. the amount of air gap in the magnetic circuit. the properties of the core material (especially permeability and hysteresis). the operating temperature of the core. whether the core is laminated to reduce eddy currents.In many applications it is undesirable for the core to retain magnetization when the applied field is removed. This property, called hysteresis can cause energy losses in applications such as transformers. Therefore, 'soft' magnetic materials with low hysteresis, such as silicon steel, rather than the 'hard' magnetic materials used for permanent magnets, are usually used in cores.
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