Activity 1.2.4 Circuit Calculations
Introduction
Regardless of circuit complexity, circuit designers as well as users need to be able
to apply basic electrical theories to circuits in order to verify safe operation and
troubleshoot unexpected circuit failure. In this activity you will gain experience
applying Ohm’s law and Kirchhoff’s voltage and current laws to circuits in order to
gain understanding of circuit requirements and relationships between voltage,
current, and resistance.
.
Equipment
Engineering notebook
Pencil
Calculator
Procedure
1. For each of the resistors shown below, use Ohm’s law to calculate the unknown
quantity. Be sure to put your answer in proper engineering notation and use the
correct units.
3.5/470=7.4 miliamps 3.5/15.5=.226 ohms 22x1.4=30.8 v
2. For each of the circuits shown below, calculate the value for RT. Be sure to put
your answer in proper engineering notation and use the correct units.
© 2012 Project Lead The Way, Inc.
POE Activity 1.2.4 Circuit Calculations – Page 1
