represent ways of representing subject matter. Equations are symbolic representations of subject matter which when interpreted correctly can result in conceptual understanding. For example‚ the equation φ = BA can be used to define magnetic flux as: product of magnetic field strength and the area enclosed by a conductor. This equation can also be used to identify the
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eddy current braking system for high speed. For such a breaker‚ we give analytical formulas considering end effects for its magnetic field‚ eddy current distribution‚ forces according to the secondary relative permeability‚ and conductivity. The results given here are purely analytic & applicable. INTRODUCTION The term “EDDY” Focault Bae J. S.(2004) found that when magnetic flux linked with a metallic conductor changes‚ induced currents are set up in the conductor in the form of closed loops. These
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is a widely applied and low-cost inspection method used to locate surface-breaking defects in all non-porous materials (metals‚ plastics‚ or ceramics). Penetrant may be applied to all non-ferrous materials‚ but for inspection of ferrous components magnetic-particle inspection is preferred for its subsurface detection capability. LPI is used to detect casting and forging defects‚ cracks‚ and leaks in new products‚ and fatigue cracks on in-service components. 1. Section of material with a surface-breaking
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[pic] | LESSON PLAN | LP – EC2253 LP Rev. No: 01 Date: 16/12/10 Page: 01 of 06 | | | | | | | |Sub Code & Name: EC2253 - ELECTROMAGNETIC FIELDS | | | |Unit : I Branch : EC
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Name____________________ Magnet Lab Problems: 1. How does a compass react when moved around a bar magnet? 2. How can you tell that a magnetic field is produced when electricity flows through a wire? 3. As you move further away from a magnet‚ what happens to the magnetic field strength? What is this similar to? Hypotheses: 1. _________________________________________________________________ 2. _________________________________________________________________ 3.
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conductor when it is moved through a magnetic field because the magnetic lines of force are applying a force on the free electrons in the conductor and causing them to move. This process of generating current in a conductor by placing the conductor in a changing magnetic field is called induction. This is called induction because there is no physical connection between the conductor and the magnet. The current is said to be induced in the conductor by the magnetic field. One requirement for this
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Hendriks Factors that Affect the Strength of an Electromagnet Purpose: To test how two different factors‚ the number of loops and the current intensity‚ affect the strength of the magnetic field of an electromagnet. Materials: Power pack‚ 4 connecting wires‚ switch‚ ammeter‚ paperclips‚ iron nail‚ copper wire. PART A: TESTING THE NUMBER OF LOOPS Procedure: 1. Create an electromagnet made of an iron nail with 5 loops
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experience and qualitiviely analyze principles of magnetic fields and forces‚ their sources‚ and interactions with moving charged particles. To accomplish this lab‚ we will do 5 stations‚ and we need these instruments: several magnets which have different sizes‚ a board‚ a piece of alumium metal‚ a battery‚ two pieces of wires‚ a nail‚ a 180cm copper pipe. Station1‚ we tilt a smooth board and roll the neodymium down it‚ the track is curve because the magnetic field of the earth is affecting the magnet
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Finding the Charge to Mass Ratio of the Electron Via a Uniform Magnetic Field Generated by Helmholtz Coils Abstract The charge to mass ratio of the electron was found to be [pic] with a percent difference from the accepted value ([pic]) of 1.1% when adjusted for the Earth’s magnetic field. Without taking the Earth’s magnetic field into consideration‚ the charge to mass ratio was found to be [pic] with a percent difference of 5.3%.
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they can work through wood‚ but I hypothesize that they can’t work through both‚ because the magnetic field will be blocked too much. I designed five different set-ups to test how the magnets react in different ways using these materials. The results of the experiment proved four out of five parts of my hypothesis correct and proved one part of the hypothesis wrong. I learned from my project that the magnetic field can withstand objects in between magnets‚ but the more you put between the magnets‚ the
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