PPT-Electromagnetic Oscillations and Alternating Current

Chapter 31 Copyright 2014 John Wiley amp Sons Inc All rights reserved 311 Electromagnetic Oscillations 3101 Sketch an LC oscillator and explain which quantities oscillate and what constitutes one period of the oscillation. Guiding of microwaves along a Objects of the experiments Generating standing microwaves on a acter of the electric field strength. from the distances between the nodes of the electric field.In 1890, the current and voltage Objects of the experiments Detecting the reflection-free propagation of a current and voltage wave on the Lecher line terminated with the loopdipole. Determining the current an PHASE . A.C . CIRCUITS. ELECTRICAL ENGG SCIENCE. . CHAPTER - 6. CONTENT. 1. Generation . of alternating voltage and current . . 2. Different . forms of E.M.F equations. . 3. A.C . through R, L and C and power factor . Guiding of microwaves along a Objects of the experiments Generating standing microwaves on a acter of the electric field strength. from the distances between the nodes of the electric field.In 1890, Chapter. 31. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 31-1. Electromagnetic . Oscillations. 31.01 . Sketch an LC oscillator and explain which quantities oscillate and what constitutes one period of the oscillation.. Learning Outcomes. Distinguish between alternating and direct current.. State . the frequency of UK mains electricity.. Describe . how the potential of the live wires varies each cycle.. State . that the potential of the neutral wire is approximately . Read pages 439 - 454. AC Generator. As the ring rotates within the magnetic field, what happens?. Sketch a graph to show how the rotation of the ring will affect the reading on the attached voltmeter.. AP Physics C. Faraday’s Discovery. Electromagnetic Induction is the process of using magnetic fields to produce voltage, and in a complete circuit, a current.. Michael Faraday first discovered it in 1831, using some of the works of Hans Christian . Key Points. Ohm’s Law. Resistivity. Electric Power. Alternating Current. References. . 18-1,2,3,4,5,6,7. Electric current is the rate of flow of charge through a conductor:. Unit of electric current: the ampere, . A generator is the opposite of a motor – it transforms mechanical energy into electrical energy. This is an ac generator:. The axle is rotated by an external force such as falling water or steam. The brushes are in constant electrical contact with the slip rings.. No Class on Wednesday March 8. Labs taught by Dr. . Mahes. on Monday and Tuesday.. No quiz on . Friday, March 10. Exam 2 on Friday, March 24, study guide posted online. Current from a battery flows steadily in one direction (direct current, DC). Current from a power plant varies sinusoidally (alternating current, AC).. Essential idea:. Generation and transmission of alternating current (ac) electricity has transformed the world.. Nature of science:. Bias: In the late 19th century Edison was a proponent of direct current electrical energy transmission while Westinghouse and Tesla favored alternating current transmission. The so called “battle of currents” had a significant impact on today’s society.. What is the need for an AC circuit?. The generation of single phase voltage.. The relation between time and angle.. The maximum, average and effective value.. The form factor and peak factor.. Phasor representation of sinusoidal waveform.. AC. )?. Why the AC generated? What is the need for an AC circuit?. Alternating Current Waveforms. Different (Alternating) Sinusoidal Current Waveform Generators. There are 2 types of Current. DC = Direct Current .