sensor )‚ 0.01 uT - 19.99 uT to 19.99 uT. available for high precision magnetic field measurement. 0. 1 uT ≧ 20.0 uT‚ ≦ -20.0 uT. * Using exclusive high sensitivity sensor ( better * Wide application for industrial‚ mechanical‚ material‚ Accuracy ± ( 2 % + 2 mG ) electrical‚ laboratory field to check the material * -1‚000 mG to 1‚000 mG contains magnetic field value. * -100.0 uT to 100.0 uT * DC and AC magnetic field measurement Field Direction Uniaxial. * Wide measure range : ± 3
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Why is magnetic flux through closed surface zero while electric flux not? Gauss’ Law for Magnetism The net magnetic flux out of any closed surface is zero. This amounts to a statement about the sources of magnetic field. For a magnetic dipole‚ any closed surface the magnetic flux directed inward toward the south pole will equal the flux outward from the north pole. The net flux will always be zero for dipole sources. If there were a magnetic monopole source‚ this would give a non-zero area integral
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magnitude of the B field in the vacuum is tiny compared to the E field Polarisation of an EM wave is defined as the direction of the E field Transport of energy The energy density in the electric field in a vacuum is 1 U E = ε 0 E 2 Jm-3 2 [6.1] For a magnetic field the energy density is 1 B2 Jm-3 UB = 2 µ0 [6.2] For an EM field in a vacuum we have B = E/c => E UB = 2µ0 c 1 1 2 = E2 2µ0c 2 Using c = µ 0ε 0 implies U B = ε0E 2 2 =UE The E and B fields carry the same energy in an EM wave in
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Physics Preliminary 8.2 The World Communicates 1. The wave model can be used to explain how current technologies transfer information 1. Describe the energy transformations required in one of the following: – Mobile telephone – Fax/modem – Radio and television A. An energy transformation is a change in the type of energy‚ for example a change from sound energy to electromagnetic waves. Relating this to the mobile telephone‚ it undergoes basic energy transformations of‚ sound wave
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and mass of an electron and the behavior of magnetic fields. The lab was divided into four parts. The first three parts were conducted with a compass that was used to locate the magnetic field lines around a bar magnet‚ a solenoid and then a pair of Helmholtz coils. As a result of these trials‚ our observations found evidence that magnetic field lines go from a north magnetic pole to a south magnetic pole. These results were seen in all three magnetic devices. When determining the magnitude of the
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1. Which of the following statements about magnetic fields is not true? | Magnetic Flux is a vector. | | Changing magnetic fields create electric fields. | | Changing electric fields create magnetic fields. | | The magnetic field cannot do work on a moving charge. | | The magnetic force on a moving charge can be zero. | 2. If you double the current through an inductor‚ the energy stored in the associated magnetic field increases by a factor of _____. | Two - wrong |
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have for a magnetic motor vitality. The standard ways that the energy produced from magnet is significantly far more cost effective and eco helpful. A magnetic device incorporating the use of permanent magnet turning with a rotor to generate a magnet energy which is then circuited to other mechanism to do so useful work. Magnetic principle can utilize in units of various sizes. Magnetic units can be microscopic or mile wide‚ as long as the correct principle are maintained. When magnetic fields are
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Define/describe each of the two Mag-lev vehicle systems‚ identifying similarities and differences. Answer: Electromagnetic system is a system that allows each vehicle to warp around a T-shape guide way. Electrodynamics systems are systems that utilize magnetic repulsion rather than attraction. The similarities between these two Mag-lev vehicle systems are that they both utilize magnets. However the difference between them is that one looses all their resistance and other still has it. Although the similarities
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electrical power using a magnetic field which is generated into electrical power through power receivers and charges your cell-phone without any cords being connected to your device. First you will need to get the power mat case in order for the power mat to be compatible with your device. Currently the cases are only out for Samsung Galaxy Series as well as the Apple iPhone 4(s) and 5. Connect your Power mat to the electrical outlet which will then create a small magnetic field on the device. Simply
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Describe the main features of a DC electric motor and the role of each feature Part | Description | Role | Magnet(s) | Either permanent or electromagnetic. Induce a magnetic field and fit around the armature. | The magnets supply the magnetic field which interacts with the current in the armature to produce the motor effect. | Armature | The armature consists of a cylinder of laminated iron mounted on an axle. Often there are longitudinal grooves into which the coils are wound. | The armature
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