# Applying the Engineering Project Design Process to a Simple Electrical Circuit Problem

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RE: Electrical Lab Report
The purpose of this project was to apply the engineering design process to a simple electrical circuit problem. The goal is to design and build a specific electrical circuit. A small breadboard, 25 common resistors, and jumper wires were given to construct a voltage divider. The project requires students to understand Ohm’s Law, Kirchhoff’s Current and Voltage Laws.
The project can be broken into two parts. The first part is solving voltage drop and resistance needed to drop that much voltage. The second part is to use the resistors that were assigned to reach the resistance as calculated previously. In order to have as much as close to resistance needed, the resistors need to be in series, parallel, and combination.
The individual electrical circuits were tested in class and the result of my design was pretty successful. All the voltage drops between nodes were very close to the ones were specified.
Sincerely,

Xinjia Ji
12/02/13

Electrical Laboratory Report

Prepared for:
XLIX Engineering Design Firm
9201 University City Blvd
Charlotte, NC 28223
ENGR 1201-016
Prepared by: Xinjia Ji
Date submitted: 12/02/2013

I have neither given nor received any...

... middle of paper ...

...s.
3. The actual node to ground voltages will be compared to those specified on your Test Data Sheet. A tolerance of less than +/- 5% is expected for each voltage reading.
4. We are giving five of each resistor 220Ω, 330Ω, 2200Ω, 3300Ω, and 10000Ω
Assumptions:

+

_

The voltage dropping and the resistance between the nodes will be:
V1=5.719V R1=6354 Ω
V2=4.8203V R2=5355 Ω
V3=3.784V R3=4204 Ω
V4=2.3857V R4=2650.8 Ω
V5=1.291V R5=1434Ω
Background information:
1. Electricity:
“Electrons are the negatively charged particles that orbit around the nucleus of an atom and electricity is the flow of electrons. Electricity must have a complete path to travel, or a loop, before the electrons will move.” (Electrical Theory Pre-Class Reading)
2. Ohm’s Law:
Ohm’s Law is the relationship between voltage, current and resistance.

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