ELET 1400 Lab 03 Report|Latest 2025 Update with complete solutions.

Computer Engineering Technology and
Electrical Power Engineering Technology

ELET 1400
Circuit Theory and Laboratory I



Experiment 3
Ohm’s Law, Kirchhoff’s Voltage Law, Variable Resistance, Power

Dissipation, and Voltage Divider




SP 2024 © – University of Houston, Engineering Technology ELET Lab




Exp 3: 1

,Contents
1 Purpose ........................................................................................................................... 3

2 Objectives ..................................................................................................................... 3

3 Equipment, Components and Software................................................................... 3

4 Pre-Lab ........................................................................................................................... 4

4.1 Introduction to Ohm’s Law and Kirchhoff’s Voltage Law ............................ 4

4.2 Simulation 1: Circuit with One Resistor ........................................................... 5

4.3 Simulation 2: Circuit with Two Resistors in Series ....................................... 6

4.4 Simulation 3: Circuit with Three Resistors in Series ................................... 7

4.5 Introduction to Variable Resistors (Potentiometer) .................................. 10

4.6 Function Generator .............................................................................................. 11

4.7 Oscilloscope .......................................................................................................... 13

5 Procedures ................................................................................................................... 15

5.1 Procedure 1 - Variable Resistance ................................................................. 15

5.2 Introduction to Parallel Resistance................................................................ 16

5.3 Power ...................................................................................................................... 19

5.4 Procedure 4 – Power Rating of Resistors....................................................... 20

6 Application: Voltage Divider .................................................................................... 21

7 Knowledge Evaluation................................................................................................. 23

8 References .................................................................................................................. 24




Exp 3: 2

, 1 Purpose

This experiment is an introduction to the basic laws of electricity: Ohm’s Law,

Kirchhoff’s Voltage Law (KVL), and Kirchhoff’s Current Law (KCL). You will learn

about the concepts of variable Resistance, Power Dissipation and the application

of the Voltage Divider. Also, you will run simulations using the program Multisim

prior to the construction of the circuits.


2 Objectives

At the end of this experiment, you will know how to:

1. Simulate the performance of series resistance circuits.

2. Implement series resistance circuits of two or more resistors.

3. Measure voltage and current in series resistance circuits verifying

Ohm’s law and KVL using the DMM and power supply.

4. Measure voltage and current in parallel resistance circuits

verifying KCL using the DMM and power supply.

5. Solder various resistors on the PCB.


3 Equipment, Components and Software
• DMM and Power Supply

• Soldering Gun/Solder

• Proto-board

• Resistors: 100Ω, 220Ω, 470Ω, 1KΩ, 10KΩ potentiometer.

• Multisim




Exp 3: 3