Electric Current Lab

Battery, resistance, and current Go to http://phet.colorado.edu/en/simulation/battery-resistor-circuit and click on Run Now. Batteries, Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”, watch what happens, adjust some variables Why do electrons (blue dots) move? Draw a diagram of the battery, label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery.

Part B: Series and Parallel Circuits 9. These two identical 330Ω resistors are in series with each other. There is only one path through the circuit from the power source to the ground. In this diagram, the power source is a 9V battery. One end of the battery has 9V of potential to do work (positive terminal-top). The other end of the battery has zero potential to do work (negative terminal/ground-bottom).

2.) Attach the Crocodile clips from the PSU to the ammeter and motor as shown above in the labelled diagram, making sure the voltmeters clips are attached to the motor.

5) Graph the equation you wrote in step four superimposed over the original data. Comment on how well or how

Next, you will add the AND and OR gates necessary to complete the circuit equations you derived in the lab report, part 1 section. The output F for the canonical SOP circuit should be shown on LEDG[0]. The output G for the canonical POS circuit should be connected to LEDG[1].

The problem I am going to work on is #68 on page 539 . The

A declare input and output variable B. read reports measurements in centimeters C. converted into yards, feet, and inches D. output variable. 4. Identify two test cases other than the example given above. For each of the two test cases show what inputs you will use and calculate what your expected outputs should be.

Name Institution Course Instructor Date of Submission Analysis Lab 8 Analysis In Lab 8, the time constant of resistance-capacitance was measured in order to determine the charge of a capacitor. This experiment was conducted by setting building a circuit that connects the voltmeter across the resistor. The voltmeter was then connected across the capacitor. The above procedure was conducted several times using different voltages. Afterwards, the results were calculated and tabulated. The data obtained from the lab were the theoretical Tau for 5V, 4V and 3V. In this experiment, the calculated voltage was also determined. The theoretical and the calculated values were then compared and evaluated by determining their percentage errors. For example, in the 5V, the theoretical value was 1.23V; calculated value was 1.434 with a percentage error of 16.6 %( for voltmeter across capacitor).

Week 7 Homework Assignment Chapter 7 Circuit Analysis Techniques 15. Derive the Thevenin equivalent of the circuit shown in Figure 7.47a. Req= (R1+R2)//(R3+R4)= 5.2k//1.5k= 1164 x 10^3= 1.2kΩ Rth= Req+R5= 1.2kΩ+1kΩ= 2200 x 10^3= 2.2kΩ Vth= Vs= 9V 16. Derive the Thevenin equivalent of the circuit shown in Figure 7.47b. Req= R1+R2= 22+33= 55Ω Vth= Vs x R3/Req+R3+R4= 12V x 120Ω/55+120+51 = 6.37V Rth= (R1+R2)//(R3+R4)= (22+33)//(120Ω+51Ω)= 41.6Ω 17. Derive the Thevenin equivalent of the circuit shown in Figure 7.48a. Req= R1//R2 = 1.2k // 1.8k = 720Ω Vth= Vs x R3/ Req+3 = 10V x 1kΩ/720Ω+1kΩ = 5.81V Rth= Req//R3= 720Ω//1kΩ = 418.6Ω = 418.6 =419Ω 18. Derive the Thevenin equivalent of the circuit shown in Figure 7.48b. Vth= Vs x R3/R2+R3= 6V Vrms= 0.707Vpk= 0.707 x 100V= 70.7V Ipk= Vpk/RL= 100V/12Ω= 8.33A Irms= 0.707Ipk= 0.707 x 8.33A= 5.88A 27. Complete the following table. Frequency(f) Period(T) Instantaneous Time(t) Phase(0) __100Hz___ 10ms 2ms _72°___ 120kHz __8.33µs__ ____1.38µs____ 60° _22Hz___ 45ms ______12.5ms______ 100° __25Hz__ __40ms_____ 10ms 90° a.) f=1/T= 1/10ms= 100Hz 0= (360°) x t/T= (360°) x 2ms/10ms= 72° b.) T= 1/f= 1/120kHz= 0.00000833 x 10^-6= 8.33µs t= T x 0/360°= 8.33µs x 60°/360°= 0.00000138 x 10^-6= 1.38µs c.) f= 1/T= 1/45ms= 22Hz t= Tx0/360°= 45ms x 100°/360°= 0.0125 x 10^-3= 12.5ms d.) f=1/T= 1/40ms= 25Hz T= 40ms, I figured this by guessing cause I could not find any information on how to calculate. So I used the equation for t and plugged in different numbers until I got the 10ms that was already given in the table. t= T x 0/360= 40ms x 90/360= 0.01 x 10^-3= 10ms

\section{Testing} \label{s:test} There are many issues that were faced during testing of the module. Following are the issues faced, test strategy used and the solutions that were implemented to remove them. The testing in this thesis can be divided into three parts, which are: \begin{itemize} \item Circuit testing. \item Software testing. \item Integrated testing. \end{itemize} \paragraph{Circuit Testing} \begin{itemize} \begin{figure}[htp] \centering \includegraphics[width=8cm,

A majority of Americans are constantly worried about bills. One of the bills people are most concerned about is the electricity bill. The electric bill varies each month based on the usage of different electrical uses and appliances. Also, have you ever wondered why when you turn off one light,

Calculating the partial derivatives yields, (∂R_X)/(∂V_1 )= R_S/(V_2+I_D R_S ) (∂R_X)/(∂V_2 )= (- V_1 R_S)/〖〖(V〗_2+I_D R_S)〗^2 (∂R_X)/(∂I_D )= (- V_1 〖R_S〗^2)/〖〖(V〗_2+I_D R_S)〗^2 (∂R_X)/(∂R_S )= ( V_1 V_2 )/〖〖(V〗_2+I_D R_S)〗^2 Whereas, σ_(V_1 ) = uncertainty of voltage source 1 output. σ_(V_2 ) = uncertainty of voltage source 2 output. σ_(I_D ) = uncertainty of current meter measurement. σ_(R_S ) = uncertainty of Rs Resistor Namely, determining cable types and connectors, designing connection boxes and measuring required wire lengths are some of the major milestones completed during this phase. Determining the best cable type for the application is crucial for the accuracy of the measurement system. Several tests performed at NIST confirms that widely used Teflon cables, retains charge in the Tera-Ohm range resistance measurements. Therefore, for the measurement system developed, polyethylene cables were chosen to connect resistors and equipment. Furthermore, BPO (British Post Office) coaxial cable connectors were chosen as the connection method. Precision of cables and connectors are crucial for the measurement system developed. Therefore, additional testing were done to ensure the accuracy of the cables. Furthermore, the connectors were cleaned using an Ultra Sonic cleaner to remove oil and dirt that could affect the insulation. After cleaning the connectors, insulation between the terminals of the connectors was checked using the Tera-Ohm meter system at

voltage of +5 Volts and -5 Volts. Following are the pre-setting which need to be done

http://www.ncbi.nlm.nih.gov/pubmed/?term=J+Biol+Chem+289(38)26960-72 Each question is marked out of 25%. The technique and detail parameter was subtracted from the paper directly used as a instruction and reference.

• Brief solution of all problems that is indicated to be occur will be made in advance.