# Lab Report

Topics: Voltage, Ohm's law, Voltage drop Pages: 2 (340 words) Published: April 2, 2013
Voltage Divider Lab Report

1.0 Introduction
The following report consists of test results gathered from the design and construction of a voltage divider. The divider was built with the purpose of reducing the power from 12V to 0V using different combinations of given resistors in a complete circuit. Having a basic understanding of electrical circuits is an essential need even for non-electrical engineers. Mechanical, computer and other engineering disciplines will be utilizing electrical circuits on a daily basis, which makes it important to have this understanding. Through the use of Ohms Law and Kirchhoff’s Law, our team was able to determine theoretical voltages prior to the construction and testing phases. After preforming the tests, it was evident that our calculations were accurate resulting in a successful experiment. 2.0 Background

The main theory used in determining the theoretical voltges was Ohms Law. Ohms Law explains the relation of current, voltage and resistance. (Patrick & Fardo 1999) This is best illustrated using the Ohms Law circle (Figure 1.1) with the variables I (current), V (voltage) and R (resistance). To use the circle properly, cover the unknown variable and perform the function remaining. For the voltage divider, we were given the current and voltage drops between the the different nodes. (Table 1.2) Using this given data, we needed to calculate the amount of power dissipated, resistance, in order to create each voltage drop. Using this information, we then selected different resistors and arranged them into combinations containing resistors in series, parallel or a combination of both (Figure 1.3). The combinations then had to be laid out according to the schematic shown in (Figure 1.2). (Figure 1.1)

Nodes| Voltage Drop|
Source to N1| 0.36|
N1 to N2| 3.598|
N2 to N3| 2.645|
N3 to N4| 0.9|
N4 to N5| 4.498|
Total Voltage| 12.001|...