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Statement about Health Effect of HV Power lines
Statement about Health Effect of HV Power lines

... conclusions from no effect to yes, there appears to be a relationship with the incidence of leukemia in children. The incidence of leukemia in a control group of children exposed to magnetic field strength less than 1 milligauss* (deemed to be harmless) follows. Acute lymphoblastic leukemia (ALL) is ...
Magnetism
Magnetism

Challenger Early College High School
Challenger Early College High School

... Report and share investigation results with others. Discuss the best method of graphing/presenting particular data. Use technology resources such as graphing calculators and computers to analyze data. Use questions and models to determine the relationships between variables in investigations. Read a ...
Magnetic field around flat high-current gas-isolated three
Magnetic field around flat high-current gas-isolated three

... In order to reduce considerably the magnetic field outside the GIL its enclosures are bonded with each other. In this case induced reverse enclosure currents appear. These current flowing through enclosures have almost the same values as the corresponding currents in the phase conductors but general ...
The World`s Simplest Motor
The World`s Simplest Motor

... magnetic field as another wire, as long as the same size current runs through it. But, if there are multiple loops of wire, then each loop creates its own field and the magnetic field is very strong as compared to a single loop with the same size current. In the World’s Simplest Motor, the coil of w ...
Magnetism Magnets Magnetic Poles - mrkearsley.com
Magnetism Magnets Magnetic Poles - mrkearsley.com

... An Electromagnet is a solenoid with a soft iron core in  the middle.  By adding the iron core, the magnetic field  is much stronger by thousands of times. The more loops of wire, the stronger the magnet. A great advantage of an electromagnet is the ability to  turn it on or off magnetism as needed.  ...
Magnetic field
Magnetic field

... electromagnetic • The strength of an electromagnetic depends on the current in the solenoid, number of loops in the coil and the type of ferromagnetic core. • greater current produces a stronger magnetic field • Increases the number of turns while keeping the current the same will increase the field ...
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2007 UF Physics REU talk

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Magnets and Electromagnets

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Electricity and Magnetism TES1

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Electromagnetic Induction

... and the loop. Since B is proportional to the amplitude of the sinusoidally varying current which causes the field, we can investigate all these dependencies experimentally. Transformers are technically important in both power and signal circuits because they can be used to change voltage and impedan ...
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Section 22.1 - CPO Science

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Interim Stations Review

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Exam 2 Solutions

... Solution: Each lightbulb draws a current of 60/110 = 0.545 A. Since 10.3/0.545 ~ 18.9, we see that no more than 18 lightbulbs can be supported on this circuit. 17. A sample containing carbon (atomic mass 12 u) and oxygen (16 u) is placed in a mass spectrometer. The ions all have the same charge and ...
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Word Work File L_987757493

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ECGR3142 Electromagnetic Devices

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Electric and magnetic forces in everyday life

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Type ME-7 Voltage Transformer

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Magnetism and Alternating Current

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magnetic_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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