polarity” and repeat the steps above after you’ve let the compass stabilize. 11. Click on the electromagnet tab. Place the compass on the left side of the coil so that the compass center lies along the axis of the coil. (The y-component of the magnetic field is zero along the axis of the coil.) 12. Move the compass along a semicircular path above the coil until you’ve put it on the opposite side of the coil. Describe what happens to the compass needle. 13. Move the compass along a semicircular
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Kevin Williams Project 1 The use of electricity and magnetism in transportation When Benjamin Franklin discovered electricity‚ it was probably one of the biggest discoveries known to mankind. Even though our dependence of electricity is a lot‚ however at the same time it’s easy to forget how dependent we actually are on it. Electricity always has and always will play a huge part in our everyday life. It’s hard to imagine humanity without it. When it comes to transportation‚ it is going to rewrite
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9.2 Space Students learn to: Students: 1. The Earth has a gravitational field that exerts a force on objects both on it and around it define weight as the force on an object due to a gravitational field perform an investigation and gather information to determine a value for acceleration due to gravity using pendulum motion or computer-assisted technology and identify reason for possible variations from the value 9.8 ms-2 gather secondary information to predict the value of acceleration
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-Faraday- his major contributions were in the fields of electromagnetism and electrochemistry. He explained the basis of magnetic field through his studies on the effects of magnetic field around a conductor which carried Direct Current (DC). In 1831‚ Faraday made one of his most renowned discoveries‚ the principle of electromagnetic induction by using the "induction ring". The electricity was generated by means of electromagnetic effect. This was the first version of an electric transformer. He
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coil is placed in varying magnetic field‚ an emf is induced in the coil. Synchronous Generator consists of two main windings‚ the armature winding and the field winding. The armature winding is on the stator and the field winding is on the rotor. For a three phase generator‚ the windings of each phase of the armature are displaces by 120 degrees from each other around the inside periphery. The field winding is a coil which carries dc current and hence produces constant magnetic field. Besides the armature
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disk"‚ proving that rotary mechanical power can be converted into electric power. The race for a practical generator begins. • Faraday’s disk 1832-1860 Various generator schemes are tried‚ mostly employing permanent magnets to create the necessary magnetic field. Ampère and Pixii make the first hand-cranked version (1832); C.G. Page proposed a reciprocating analogue of the steam engine (1850); and H. Wilde made the commercially successful Alliance generator (1866) for powering arc lamps in lighthouses
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EE 472 Laboratory Experiment No._2_ Separately Excited DC Generator Performed by : Duldulao‚ Caryl Xyra L. Date Performed : November 27‚ 2012 Date Submitted : December 4‚ 2012 Engr. Timoteo V. Limsiaco Laboratory Instructor I. MATERIALS: * Digital Wattmeter (DWM) * Digital Multi-meter (DMM) * Variac * Plastic Coupling * 10 Alligator Clips (Big Wire) * 10 Banana Plug (Big Wire) * 1 Banana Plug with Flat Plug Combination
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A.C current meters Introduction An ammeter is a measuring instrument used to measure the electric current in a circuit. Electric currents are measured in amperes (A)‚ hence the name. Neither type of basic dc PMMC meter movement will correctly indicate an alternating current. There are‚ however‚ four basic types of meter movement that will indicate ac values:- Thermocouple Hot wire Electrodynamometer Iron-vane Electrodynamic ammeters An electrodynamic meter uses an electromagnet instead
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services. The MacBook’s graphic and processor are Intel Core Duo processor and 945GM chipset‚ with Intel’s GMA 950 integrated graphics on a 667 MHz front side bus.This is the old MacBook. On the other hand‚ the freshly-redesigned Inspiron 14 has the features consumer use every day‚ weighs less than 5 lbs and has the quality you’ve come to expect from Dell. The Dell Inspiron notebook’s graphic and processor are Intel Core i3 processor and ATI Mobility Radeon™ HD 530v - 512MB for the graphic
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the University of Lyon just one year later. In 1809‚ Andre Ampere was appointed professor of mathematics at the Polytechnic school in Paris. He was admitted as a member of the Institute in 1814 and in 1820‚ after H.C. Orsted’s discovery that a magnetic needle is acted on by a voltaic current‚ Andre sent a paper of his own to the Academy that was much more detailed. He didn’t wait‚ on September 18‚ 1820‚ the very same day that he sent his paper‚ he presented a demonstration to the Academy that parallel
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