About This Chapter
Overview of Circuits - Chapter Summary
This chapter provides an overview of electric circuits, including the qualities of insulators and conductors. It goes on to discuss energy transfer and conservation in electrical circuits and the impedance in alternating current circuits. The chapter also explains RC and RLC series circuits. After completing this chapter, you should be able to:
- Define what semiconductors and superconductors are, and provide their properties
- List the different types of electric currents
- Explain the function of an ammeter
- Discuss the variables of electric resistance
- Define Ohm's Law and explain the relationship between voltage, current, and resistance
- Explain what electric power is and how a voltmeter is used to measure it
- Provide examples and problems to applying Kirchhoff's rules
- Alternate current power calculations
Our chapters are taught via short video lessons that have an available transcription for your convenience. Test your knowledge by taking the multiple choice quizzes available at the end of each lesson.
1. Insulators and Conductors: Examples, Definitions & Qualities
In this lesson, we'll explore the reasons that some materials conduct electrical energy with ease while others block it almost completely. We'll also talk about the property of conductivity and some everyday examples of insulators and conductors.
2. Semiconductors & Superconductors: Definition & Properties
Have you ever wondered how an MRI works or how cell phones are able to become more advanced? After completing this lesson, you'll be able to explain what semiconductors and superconductors are and give examples of how they are used.
3. What is Electric Current? - Definition, Unit & Types
Like a river current is the flow of water molecules, electrical current is the flow of charged particles. In this lesson, we're going to explore what electrical current is, what causes it, and that, unlike a water current, electrical current doesn't always flow in one direction.
4. What is an Ammeter? - Definition & Function
In this lesson, we'll learn what an ammeter is and what it has to do with electric circuits. We'll also talk about the proper ways to connect an ammeter in series and parallel circuits.
5. Electrical Resistance: Definition, Unit & Variables
We'll take a shopping trip to the mall to learn how electrical resistance works and how it is affected by resistivity, conductor dimensions, and temperature. We'll also take a look at several common appliances that take advantage of resistance to function.
6. Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance
Did you know that electrical current is affected by the voltage and resistance in a circuit? In this lesson, we'll use Ohm's law, which tells us how current, voltage, and resistance are related, as we work through several electric circuit examples.
7. What is Electric Power?
Power is a word we use all the time, but do you really know what it means? We'll look at how electrical power relates to voltage, current and resistance and how knowing that relationship can help you in everyday life.
8. What is a Voltmeter? - Definition & Uses
Voltmeters are ubiquitous in our world and critical to technology. In this lesson, you will learn what a voltmeter is, how it works, and how it's used.
9. Applying Kirchhoff's Rules: Examples & Problems
Ohm's Law can be useful for analyzing simple circuits, but when circuits are more complex, as they often are, we can instead analyze the circuits using Kirchhoff's rules. Learn about Kirchhoff's rules in this lesson.
10. 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.
11. Electrical Circuits: Energy Transfer & Conservation
After completing this lesson, you will be able to explain what an electric circuit it, how energy transfers in a circuit, and how circuits relate to the conservation of energy. A short quiz will follow.
12. 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.
13. 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.
14. 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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Other chapters within the MTTC Physics (019): Practice & Study Guide course
- Process of Scientific Inquiry
- Scientific Measurement Basics
- Safety Procedures and Hazards in Scientific Research
- History & Nature of Scientific Study
- Math for Physics
- Overview of Kinematics & Graphs
- Kinematics & Graphs
- Laws of Motion in Physics
- Forces in Physics
- Laws of Gravitation
- Linear Momentum in Physics
- Equilibrium and Elasticity
- Rotational Motion
- Oscillation & Simple Harmonic Motion
- Electrostatics in Physics
- Overview of Magnetism in Physics
- Overview of Waves & Sound
- Overview of the Physics of Light
- Wave Optics in Physics
- Work & Energy in Physics
- Fluids in Physics
- Thermodynamics in Physics Overview
- Modern & Nuclear Physics
- MTTC Physics Flashcards