Introduction The purpose of this lab is to examine the motion of an electron‚ when it encounters a constant magnetic and electric field. We will also observe when the electric field and magnetic field will cancel each other out. This will lead to the electron having no net force acting upon it. By adjusting the values for the magnetic and electric fields‚ we will be able to check the different paths the electron follows. From this data we will be able to calculate the charge-to-mass ratio. Then
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SPIN VALVE TRANSISTOR Technical Seminar Report Submitted in partial fulfillment Of the requirements for the award of the degree of BACHELOR OF TECHNOLOGY In ELECTRONICS & COMMUNICATION ENGINEERING By B.AVINASH (08C01A0426) . Department of Electronics and Communication Engineering
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of the electron‚ in this case. After emerging from the hole in the anode‚ the electrons enter a region with no electric fields‚ therefore then traveling at a constant velocity. The beam’s path is illuminated due to the ionization of the gas. A magnetic field is applied to the beam using Helmholtz coils. Helmholtz coils are two vertically orientated‚ identical circular coils of wire (solenoids) that are placed parallel to each other‚ symmetric along a shared axis‚ one on each side of the domain
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realization that an electric current created a magnetic field around the conductor. It was then discovered that this effect could be enhanced greatly by winding the conductor into a coil. The effect proved to be two-way: If a conductor‚ maybe in the form of a coil was placed in a changing magnetic field‚ a current could be made to flow in it; this is called induction. So imagine a coil‚ and imagine that we apply a voltage to it. As current starts to flow‚ a magnetic field is created. But this means that
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2011 H I G H E R S C H O O L C E R T I F I C AT E E X A M I N AT I O N Physics Total marks – 100 General Instructions • Reading time – 5 minutes • Working time – 3 hours • Write using black or blue pen Black pen is preferred • Draw diagrams using pencil • Board-approved calculators may be used • A data sheet‚ formulae sheets and Periodic Table are provided at the back of this paper • Write your Centre Number and Student Number at the top of pages 9‚ 13‚ 15‚ 19 and 21 Section I Pages
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The Sustainability of Experience — Investing in the Human Factor 28th Annual USSD Conference Portland‚ Oregon‚ April 28 - May 2‚ 2008 Hosted by Portland General Electric On the Cover Portland General Electric’s North Fork Dam‚ on the Clackamas River southeast of Portland‚ is a thin‚ variable-radius concrete arch dam with a maximum height of 207 feet and a thickness varying from 32 feet at the base to 8 feet at the crest. The spillway is a 200-foot-long gated ogee-type structure with
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consists of a loop that is able to rotate in a magnetic field. The electric motor uses electrical energy to make the loops rotate which creates mechanical energy. In the electric generator it uses mechanical energy to make the loops spin resulting in the creation of electric current within the loop. The way an electric generator functions is based on the principal of "electromagnetic induction". Electro magnetic induction is when you move a wire through a magnetic field causing electric current to enter
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Electric Motors and Drives This Page Intentionally Left Blank Electric Motors and Drives Fundamentals‚ Types and Applications Third edition Austin Hughes Senior Fellow‚ School of Electronic and Electrical Engineering‚ University of Leeds AMSTERDAM • BOSTON • HEIDELBERG • LONDON • NEW YORK • OXFORD PARIS • SAN DIEGO • SAN FRANCISCO • SINGAPORE • SYDNEY • TOKYO Newnes is an imprint of Elsevier Newnes is an imprint of Elsevier Linacre House‚ Jordan Hill‚ Oxford OX2 8DP 30 Corporate
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3.3.3 In Class or Homework Exercise 1. The rectangular loop below is being pulled to the right‚ out of the magnetic field which points inward as shown. In what direction is the induced current? No current is induced in the top or bottom wire‚ since they are moving parallel to themselves. The only current induced is in the left wire‚ where the current is induced upward. The result will be a clockwise current. 2. If the solenoid below is being pulled away from the loop shown‚ in what direction
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rot E = - B/t (2) div B = 0 (3) div D = (4) Here rot (or curl in English literature) is the so called vortex density‚ H is vector of the magnetic field strength‚ j is the current density vector‚ D/t is the time derivative of the electric displacement vector D‚ E is the electric field strength‚ B/t is the time derivative of the magnetic induction vector B‚
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