Theory CONDUCTORS‚ INSULATORS AND CONDUCTIVITY Conduction of electricity in electric circuits takes place due to the presence of excess electrons in materials called conductors. Electrons move in the direction in which the potential has been applied. The ability of a conductor to conduct electricity is directly proportional to the material’s area of cross section and inversely proportional to its length. Where‚ G is conductance σ is conductivity A is area of cross section
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Home | Map | Projects | Construction | Soldering | Study | Components | 555 | Symbols | FAQ | Links Oscilloscopes (CROs) Setting up | Connecting | Measuring | Timebase | Y amplifier | AC/GND/DC Next Page: Power Supplies Also See: AC‚ DC and Electrical Signals | Circuit symbol for an oscilloscope | | Cathode Ray Oscilloscope (CRO) Photograph © Rapid Electronics | An oscilloscope is a test instrument which allows you to look at the ’shape ’ of electrical signals by displaying
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point during the questioning process the actor would refuse to answer any further questions and the teacher would be interested to administer a shock due to the fact that silence was taken as an incorrect answer. After hitting three hundred and thirty volts the learner would be completely silent and that is if the teacher reached this point without any rebellion ("Milgram’s Experiment on Obedience to Authority”.) The teacher is instructed to administer an electric shock for every wrong answer that the
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EC2259 Electrical Engineering And Control System Lab Manual LAB MANUAL VEL TECH MULTI TECH ( ISO 9001: 2000 Certified Institution & NBA Accredited ) (Owned by VEL Sree R.Rangarajan Dr. Sagunthala Rangarajan Educational Academy) Approved by AICTE‚ New Delhi & Affiliated to Anna University No 42‚ Alamathi Road‚ Near Avadi Chennai – 600 062 DEPARTMENT OE ELECTRONICS AND COMMUNICATION ENGINEERING EC 2259 - ELECTRICAL ENGINEERING AND CONTROL SYSTEM LAB II YEAR IV SEM ECE Prepared By
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The teachers job was to administrate a learning task and deliver ’electric shocks’ to the learner (in another room) if he got a question wrong. The shocks began at 15 volts and increased in increment of 15 volts to a maximum of 450 volts. The results showed 65% of Miligram’s participants delivered the full (and fatal) 450 volt shock. Even though the learner gave out an agonised scream
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[pic] Module 5: Electricity by Jeremiah N. Junatas‚ June 2009 [pic] Table of Contents • The Electrical Nature of Matter • The Behavior of Electric Charges • Electric Fields • Electric Potential (Voltage) • Current ‚ Voltage‚ and Resistance [pic] A. The Electrical Nature of Matter All atoms are made up of protons‚ neutrons‚ and electrons. The classical model of the atom consists of a positively charged nucleus made up of protons and neutrons‚ and a number of
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Current is a flow of electrical charge carriers‚ usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I. The standard unit is the ampere‚ symbolized by A. One ampere of current represents one coulomb of electrical charge (6.24 x 1018 charge carriers) moving past a specific point in one second. Physicists consider current to flow from relatively positive points to relatively negative points; this is called conventional current or Franklin current. Electrons
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called Mr. Wallace) was taken into a room and had electrodes attached to his arms‚ and the teacher and researcher went into a room next door that contained an electric shock generator and a row of switches marked from 15 volts (Slight Shock) to 375 volts (Danger: Severe Shock) to 450 volts (XXX). Milgram’s Experiment Aim: Milgram (1963) was interested in researching how far people would go in obeying an instruction if it involved harming another person. Stanley Milgram was interested in how easily
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Obedience to Authority Milgram’s obedience to authority experiment countered the participant’s moral beliefs against the demands of authority. For this study‚ Milgram took out a newspaper ad that offered $4.50 for one hour of work‚ at Yale University‚ for a psychology experiment that sought to investigate memory and learning. Participants were told that the study would look
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right size There are five steps to calculating the right size of cable for a particular load. These are as follows: 1 Calculate the design current (Ib). This is the normal current drawn by the load. It is usually determined as follows: Watts Ib = Volts 2 Select the type and current rating of the overcurrent device (In). 3 Apply the relevant correction factors to obtain the tabulated current (It). Correction factors are applied to situations which inhibit a cable from dissipating its heat caused by
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