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Brushless DC Motors
Brushless DC Motors

Instructions on how to use a Silva compass
Instructions on how to use a Silva compass

... which ‘quadrant’ the magnetic bearing will be. STEP 2 Align the edge of the baseplate along the direction of travel. The "Direction of Travel" arrow (located on the baseplate) should point toward your destination and away from your starting point. STEP 3 Rotate the dial of the compass so the orienti ...
Comp Quest 22 SPI 0807.12.3
Comp Quest 22 SPI 0807.12.3

... points to the north because its north pole is attracted to a very large magnetic south pole. Although you can think of Earth as having a giant bar magnet through its center, there isn’t really a magnet there. The temperature of Earth’s core is very high. The atoms in it move too violently to stay li ...
General Physics
General Physics

... Our study will first consider electric phenomena and the magnetic phenomena. Later we will show that the two cannot be separated, certain electric phenomena produce magnetic effects, and certain magnetic phenomena produce electric effects. This leads us to unify electric and magnetic phenomena under ...
mag03
mag03

Curriculum and Requirements
Curriculum and Requirements

... strategy. Applications of Kirhoff’s rules: series-, parallel connection, potential divider, broaden the range of ammeter, voltmeter, Wheatstone bridge. 46. week Work and power in stationary current circuit. Basic magnetic phenomenon. Introduction of magnetic induction by Ampere’s force. Lorentz’s fo ...
Document
Document

... CT-3- Consider two parallel wires carrying currents I1 and I2 respectively. The wires are a small distance a apart. Which of the following (is) are true: A. If I1 = 2I2 and the directions of the currents are in the same direction, then the attractive force on the wire carrying I2 is 2 times that on ...
Document
Document

Effect of the Orientation of a Magnetic Field on the Resistance of a
Effect of the Orientation of a Magnetic Field on the Resistance of a

11. Electric Power
11. Electric Power

Chapter 30.
Chapter 30.

... field at a distance r > a is twice what it would be if only one wire were present. D. If the magnitudes of the currents are the same but their directions are opposite to each other the magnetic field at a distance r > a is zero or close to zero. E. Two of the above F. None of the above [Don’t click] ...
Topic 5 , 10-11 New Selected Problems 2 - Solutions
Topic 5 , 10-11 New Selected Problems 2 - Solutions

... Variable resistor also called a potentiometer. It varies the resistance and thus controls the current. Make sure you can relate the lab equipment to the circuit diagram below it. Be able to label different parts of the circuit. Be able to label the position of the potentiometer to give you full resi ...
ch-6 [Magnetism]
ch-6 [Magnetism]

... produces an electrical current Different ways to change magnetic field - turn on the key in a DC circuit - Move a magnet up or down inside a stationary coil and vice versa ...
AP Physics III.E
AP Physics III.E

... Ex. The rod in the illustration has a velocity of 5.0 m/s perpendicular to a magnetic field with a strength of 0.80 T. The length of the rod is 1.6 m and the bulb has a resistance of 96 Ohms. Find a) the EMF b) the induced current c) the electric power dissipated by the bulb and d) the energy used ...
Induction and Inductance
Induction and Inductance

Basic Electricity
Basic Electricity

... Eventually, the capacitor is completely "charged up" and no more current will flow. With direct current, a capacitor would eventually become charged up and no more current would flow through the capacitor. With alternating current, and the current switched directions backwards, then the capacitor wo ...
C_Magnetism_Notes 2009
C_Magnetism_Notes 2009

... speed v at right angles to magnetic field B as shown. Derive an expression for the path of the particle as a function of charge, mass, speed, and magnetic field strength. V ...
S. Savin
S. Savin

Into the page
Into the page

... • direction of magnetic field, B, is parallel to field line • number of lines per area is proportional to strength of field •field lines point from N to S •field lines form closed loops ...
Field Around Magnet • Use a compass to map the direction of the
Field Around Magnet • Use a compass to map the direction of the

... •  direction of magnetic field, B, is parallel to field line •  number of lines per area is proportional to strength of field • field lines point from N to S • field lines form closed loops ...
induces
induces

... Notes on Magnetism from Current A straight wire is the simplest setup we can create. The magnetic field goes around the wire perpendicular to it. The farther we get from the wire, the weaker the field gets. There’s a trick to remembering which way the field goes. ...
Unit 14* Magnetic Induction
Unit 14* Magnetic Induction

... T = time in seconds L = inductance in henrys R = resistance in ohms This formula describes the time necessary for current in an inductor to reach its full Ohm’s law value. ...
Magnetism - Physical Science
Magnetism - Physical Science

... aligned magnetic poles. • A) In a magnet, the like poles of all the domains point in the same direction. • B) Permanent magnets are made by placing a magnetic material in a strong magnetic field, forcing a large number of magnetic domains to line up. ...
Please read.
Please read.

Here is the Original File
Here is the Original File

... Before the magnetic field is applied, the NMR graph shows a curved background wave which peaks or reaches a minimum at the value in MHz where we would expect to find the proton. When the magnetic field is applied, we see the NMR curve, which is displayed below in the graph in the upper right hand co ...
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Giant magnetoresistance



Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR.The effect is observed as a significant change in the electrical resistance depending on whether the magnetization of adjacent ferromagnetic layers are in a parallel or an antiparallel alignment. The overall resistance is relatively low for parallel alignment and relatively high for antiparallel alignment. The magnetization direction can be controlled, for example, by applying an external magnetic field. The effect is based on the dependence of electron scattering on the spin orientation.The main application of GMR is magnetic field sensors, which are used to read data in hard disk drives, biosensors, microelectromechanical systems (MEMS) and other devices. GMR multilayer structures are also used in magnetoresistive random-access memory (MRAM) as cells that store one bit of information.In literature, the term giant magnetoresistance is sometimes confused with colossal magnetoresistance of ferromagnetic and antiferromagnetic semiconductors, which is not related to the multilayer structure.
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