Homework Week 6 Chapter 5 Practice Problems 15. Determine the potentiometer setting required to set the total circuit current in Figure 5.32a to 50mA. I1=Vs/R1= 12V/300Ω= 0.04 x 10^-3= 40mA I2=It – I1= 50mA – 40mA= 0.01 x 10^-3= 10mA R2=Vs/I2= 12V/10mA= 1200 x 10^3= 1.2kΩ 38. Figure 5.43 shows a potentiometer wired as a current divider. Determine the values of Rab and Rbc that will provide values of I1=4 mA and I2=6 mA. Rab= (4mA/10mA) x 100Ω= .4 x 100Ω= 40 Ω Rbc= (6mA/10mA) x 100Ω= .6 x 100Ω= 60Ω
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Discussion Through this experiment we have learnt about the basic concept of simulation and circuit design using TINA Sofware in the computer lab. TINA is a software that used to designing‚ simulating and analyzing analog‚ digital and mixed electronic circuits. Analysis result can be displayed as sophisticated diagrams or an range of virtual instruments. Any circuit can be design easily by using schematic editor. The components can be chosen from the large library. The parameters of each components
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What happens to resistance of a conductor when its area of cross-section is increased? Ans. Resistance decreases Question 2 The charge possessed by an electron is 1.6x10-19 coulombs. Find the number of electrons that will flow per second to constitute a current of 1 ampere. Ans. Question 3 Name the instrument used to measure electric current in a circuit. Ans. Ammeter Question 4 In the following table the values of current I flowing in a given resistor for the corresponding
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Experiment No: EM-1 Title: Ohm’s Law‚ Meters‚ Resistivity I Purpose: The basic of simple electrical circuits and measurements is learned. Also‚ investigating the dependence of the resistance of a wire on its length‚ cross-sectional area‚ and the material of which it is made. By examining electrical resistance (R) through a metal conductor‚ the voltage (V) and current (I) through the conductor‚ the following principles will be demonstrated: 1.) Ohm’s Law 2.) Dependence of resistance (R)
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Introduction This experiment focuses on two concepts. These concepts are Proportionality and Superposition theorems. Proportionality is a way to relate two quantities together. This means that when more input is supplied‚ you get more output which is proportional to the input. The Proportionality Theorem states that the response in a circuit is proportional to the source acting in the circuit. This is also known as Linearity. The proportionality constant (K) relates the input voltage to the
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iLab Steps Part I: Basic Capacitor Functions Step 1: Open Circuit File Open the circuit file Week_1_Class_Activity_1_Cap_updated in the Week 1 folder found in Document Sharing utilizing MultiSim. Step 2: Energize Circuit Click the switch to turn on the circuit. Step 3: Operation and Observation Procedure Accomplish the following procedure to observe the operation of the circuit and to assist in the answering of questions at the end of Part I. 1. Press the space key to close the switch and
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Working with the 555 555 is used for producing a clock (square wave) at a desired frequency. It can be used in various ways like the astable mode‚ monostable mode etc. Here‚ we deal with the astable operation of 555. Astable mode ensures that the 555 is self-triggered & so‚ it acts as a multi-vibrator. Let us look into the working of 555 in astable mode: These are the connections needed to make the 555 chip run in the ‘astable’ mode. The pin numbers are given in circles. Note the
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ummary: Did you ever think that how the street lights automatically turn ON in the night and turn OFF automatically at morning? Is there any person who comes to ON/OFF these lights? The following circuit that described below which perform this job automatically. This circuit employed the output from an uncomplicated light/dark activated circuit and oblige a relay in its output which can be further attached to switch ON/OFF a street light and electrical application in a household also. Many of the
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44. Why do you never apply an ohmmeter to a live network? (Boylestad 98) Boylestad‚ Robert L. Introductory Circuit Analysis‚ VitalSource for DeVry University‚ 12th Edition. Pearson Learning Solutions‚ 11/2012. VitalBook file. Answer: It will be an inaccurate measurement because there is already a current flowing inside of it. An ohmmeter measures the current from the voltage that’s been being put out. So by applying an ohmmeter to a live network it will have an confusion between the live
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Automatic Street Light [pic] Submitted By: Introduction Automatic Streetlight needs no manual operation for switching ON and OFF when there is need of light. It detects itself weather there is need for light or not. When darkness rises to a certain value then automatically streetlight is switched ON and when there is other source of light i.e. day time‚ the street light gets OFF. The sensitiveness of the street light canal so be adjusted
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