About This Chapter
Using Electricity in Engineering - Chapter Summary
In this informative chapter, our instructors present the ways electricity is used in engineering. You'll review brief lessons that cover the bias and formula of a voltage divider circuit, the different types of potentiometers, how to make alternating current power calculations and many more electrical engineering concepts. This chapter is designed to help you do the following:
- Calculate the internal resistance of a cell using a potentiometer
- Identify the calculations associated with a meter bridge circuit
- Provide an explanation of a resistor-capacitor (RC) circuit
- Define impedance in alternating current circuits
- Outline how R-L-C circuits work
- Detect and measure electric current using a galvanometer
Our learning tools outline even challenging topics in an easy-to-follow and user-friendly way. To ensure you've understood what you've learned, take the short quiz following each lesson. These quizzes, along with the chapter test, make excellent test preparation exercises. You're welcome to study at any time you'd like on your mobile device or computer.
1. Voltage Divider Circuit: Rule, Bias & Formula
In this lesson, you will learn that a voltage divider is a set of series-connected resistors with an input voltage applied to the entire string. Each resistor develops an output voltage across its terminals that is a fraction of the input voltage. These fractions depend only on the resistance values.
2. What is a Potentiometer? - Definition & Types
This lesson defines a potentiometer and a method to calculate the voltage output of a potentiometer. Two main types of potentiometers are discussed, linear and rotary, with some details on their construction.
3. Resistor-Capacitor (RC) Circuits: Definition & Explanation
Resistor-capacitor (RC) circuits are everywhere because they are useful in our everyday lives. The current in these circuits varies with time, making them both practical and common in many types of electronic equipment.
4. Impedance in Alternating Current Circuits
In this lesson, you will learn about topics that include the difference between DC and AC circuits, the use of rms values, definitions of impedance and reactance, and calculations involving the reactance of capacitors and inductors.
5. R-L-C Series Circuits
After watching this lesson, you will be able to explain what an RLC series circuit is and use related equations to solve simple problems. A short quiz will follow.
6. Using a Galvanometer to Detect & Measure Electric Current
When an electrical circuit has a power source, it has a current flowing through it. This lesson will explain how a galvanometer is used to detect and measure the current in a circuit.
7. Alternating Current Power Calculations
After watching this lesson, you will be able to explain the difference between AC and DC circuits and calculate AC current, AC voltage and AC power using both rms values and peak values. A short quiz will follow.
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