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6. Magnetism
... Ferromagnetism Ferromagnetic material contains “domains” 1 mm in length and normally random in direction Each acts like tiny magnet Generally, domains cancel – no magnetic effects An external field aligns domains (non-random) A strong magnetic field can make other ferromagnetic materials into perma ...
... Ferromagnetism Ferromagnetic material contains “domains” 1 mm in length and normally random in direction Each acts like tiny magnet Generally, domains cancel – no magnetic effects An external field aligns domains (non-random) A strong magnetic field can make other ferromagnetic materials into perma ...
Magnetic Field Lines
... Definition Magnetic Field (B) • The magnetic field (B) is defined as a vector with both direction and magnitude (strength) that varies with both position and distance from a magnetic pole. • In this case, the magnetic field of the magnet exerts a force on the iron rods within the Demonstrator which ...
... Definition Magnetic Field (B) • The magnetic field (B) is defined as a vector with both direction and magnitude (strength) that varies with both position and distance from a magnetic pole. • In this case, the magnetic field of the magnet exerts a force on the iron rods within the Demonstrator which ...
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dekalb reads - GEOCITIES.ws
... 11. What is the most common source for the mechanical energy used in commercial power plants? 12. ________________ and ____________ are two aspects of a single electromagnetic force. 13. Visible light travels as _______________________. 14. EM Waves (Electromagnetic waves) are made up of ___________ ...
... 11. What is the most common source for the mechanical energy used in commercial power plants? 12. ________________ and ____________ are two aspects of a single electromagnetic force. 13. Visible light travels as _______________________. 14. EM Waves (Electromagnetic waves) are made up of ___________ ...
Topic XIII – Waves and Sound - Science - Miami
... Describe how a current is affected by a magnetic field. Describe how magnetic fields are produced. Explain the relationship between moving charges and magnetic fields, as well as changing magnetic fields and electric fields Describe how a magnetic field exerts a force on a charged particle i ...
... Describe how a current is affected by a magnetic field. Describe how magnetic fields are produced. Explain the relationship between moving charges and magnetic fields, as well as changing magnetic fields and electric fields Describe how a magnetic field exerts a force on a charged particle i ...
Even if the forces acting on a body are balanced in
... When a conductor carrying an electric current is placed in a magnetic field, it may experience a force. Fleming’s Left Hand Motor Rule (we drive motor cars on the left). Mutually at right angles thuMb - Movement First finger - Field seCond finger - Current It must be perpendicular to the force to ge ...
... When a conductor carrying an electric current is placed in a magnetic field, it may experience a force. Fleming’s Left Hand Motor Rule (we drive motor cars on the left). Mutually at right angles thuMb - Movement First finger - Field seCond finger - Current It must be perpendicular to the force to ge ...
22.2 Production of Electromagnetic Waves Oscillating charges will
... Reception of Radio Waves •Oscillating vertical electric fields cause oscillating currents in the antenna. •Oscillating horizontal magnetic field can induce a oscillating current in a loop antenna ...
... Reception of Radio Waves •Oscillating vertical electric fields cause oscillating currents in the antenna. •Oscillating horizontal magnetic field can induce a oscillating current in a loop antenna ...
Magnetism
... • In the picture, the needle/nail hanging from the magnet is only a temporary magnet, as it will lose its magnetism once it is removed from the bar magnet. ...
... • In the picture, the needle/nail hanging from the magnet is only a temporary magnet, as it will lose its magnetism once it is removed from the bar magnet. ...
Record in your notes Examples of Electromagnet Uses
... area around the magnet in which magnetic forces act; concentrated into a pattern of lines that extend from the magnet’s north pole to its ...
... area around the magnet in which magnetic forces act; concentrated into a pattern of lines that extend from the magnet’s north pole to its ...
Transformers and Generators - juan
... through the other coil. When an alternating voltage is applied to one coil, the varying magnetic field set up around that coil induces an alternating voltage in the other coil. • Transformers will not work with direct current, since no changing magnetic field is produced, and therefore no current ca ...
... through the other coil. When an alternating voltage is applied to one coil, the varying magnetic field set up around that coil induces an alternating voltage in the other coil. • Transformers will not work with direct current, since no changing magnetic field is produced, and therefore no current ca ...
PHYSICAL SCIENCE
... • A compass can be used to determine direction because of Earth’s magnetic field. • The source of the Earth’s magnetism is under debate. • The Earth’s magnetic field has changed directions throughout its geologic history – more than 20 time in the past 5 million years alone. • Evidence for magnetic ...
... • A compass can be used to determine direction because of Earth’s magnetic field. • The source of the Earth’s magnetism is under debate. • The Earth’s magnetic field has changed directions throughout its geologic history – more than 20 time in the past 5 million years alone. • Evidence for magnetic ...
Magnetic exam fill-in
... Consider a horizontal rectangular metallic bar carrying an electric current in the long direction and placed in a vertical magnetic field as shown at right. Assume the metal has a density of movable electrons = n electrons/m3 which move through the metal with drift velocity v. (a) Which direction ar ...
... Consider a horizontal rectangular metallic bar carrying an electric current in the long direction and placed in a vertical magnetic field as shown at right. Assume the metal has a density of movable electrons = n electrons/m3 which move through the metal with drift velocity v. (a) Which direction ar ...
Ferrofluid
A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.