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Ch 36: Currents, Waves & Circuits

About This Chapter

Demonstrate your level of knowledge about currents, waves, and circuits by going through this chapter. We offer convenient study options, with a 100% online format, around-the-clock access to learning tools, a mobile-friendly platform, and shorter lessons to make the most of your study time.

Currents, Waves & Circuits - Chapter Summary

In this chapter, discover how currents, waves, and circuits work to form and transfer energy. Our instructors make this chapter fun and exciting to learn. To do so, they use video and article-style lessons that keep you fully engaged as you go over information about DC and AC current comparisons, related theories and effects, Planck's constant, wave-particle duality, and more. After you complete the chapter, you should possess a greater understanding of these topics and be able to:

  • Explain alternating currents and displacement currents and impedance
  • Identify alternating current circuits analyze circuits in the R-L-C series
  • Check out the properties and sources of electromagnetic waves
  • Examine Maxwell's Equations and the Davisson-Germer Experiment
  • Explain the history and equation of the photoelectric effect
  • Define diodes, integrated circuits, and light emitting diodes (LEDs)
  • Review the fundamentals and properties of the semiconductor
  • Show the uses for PNP and NPN transistors
  • Outline the parts of semiconductors, circuit boards, and circuits

Some of the lessons in this chapter are presented as informative videos. Each video is short in duration, with the average length around 5-10 minutes. Underneath each video is a timeline feature, which breaks down the specific major concepts mentioned within each video. Therefore, if you are using these videos to get a quick recap before taking a major exam, the timeline feature gives you the ability to find individual concepts that you can go over more closely.

14 Lessons in Chapter 36: Currents, Waves & Circuits
Test your knowledge with a 30-question chapter practice test
Alternating Current: Definition, Advantages & Disadvantages

1. Alternating Current: Definition, Advantages & Disadvantages

Alternating current (AC) is easy to generate and use, with numerous advantages over direct current. In this lesson, we'll define AC, discuss its advantages and disadvantages, and provide a quiz.

Impedance in Alternating Current Circuits

2. 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.

R-L-C Series Circuits

3. 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.

Electromagnetic Waves: Definition, Sources, Properties & Regions

4. Electromagnetic Waves: Definition, Sources, Properties & Regions

Electromagnetic waves power everything from your computer's Internet connection to your radio to atomic weapons. In this lesson, we'll look at the entire spectrum, as well as how they are formed and characteristics of each group of waves.

Displacement Current: Definition & Function

5. Displacement Current: Definition & Function

Discover what displacement current is and how its theory was developed. Then, explore how the structure of electromagnetic waves and how they propagate through space are related to displacement current.

Maxwell's Equations: Definition & Application

6. Maxwell's Equations: Definition & Application

After watching this video, you will be able to explain what Maxwell's equations are, the basic principles behind each one, and what benefits they have led to in society. A short quiz will follow.

The Photoelectric Effect: Definition, History, Application & Equation

7. The Photoelectric Effect: Definition, History, Application & Equation

In this lesson, you will learn what the photoelectric effect is, how it was discovered, how it applies to everyday life, and the equation associated with it. A short quiz will follow.

What is a Photon? - Definition, Energy & Wavelength

8. What is a Photon? - Definition, Energy & Wavelength

In this lesson, we will learn the definition of a photon. We will also explain Planck's constant and its relationship to the photon energy and wavelength. The calculation of photon energy is also demonstrated.

Wave-Particle Duality & the Davisson-Germer Experiment

9. Wave-Particle Duality & the Davisson-Germer Experiment

After watching this video, you should be able to explain what wave-particle duality is, explain how the Davisson-Germer experiment contributed to our evidence for it, and use the de Broglie equation to solve problems. A short quiz will follow.

What Is a Semiconductor? - Devices, Properties & Fundamentals

10. What Is a Semiconductor? - Devices, Properties & Fundamentals

Microchips used in computer systems use a very thin sheet of silicon dioxide with microscopic electronic circuitry. Silicon is a semiconductor material, which means the material can be altered to either conduct an electrical current or not.

What is a Diode? - Definition & Types

11. What is a Diode? - Definition & Types

In this lesson, we explore the fundamental operation of a diode. We also look are some the various types of diodes, such as the zener diode, the Schottky diode, the light emitting diode, and the laser diode.

What is a Light Emitting Diode (LED)? - Definition & Applications

12. What is a Light Emitting Diode (LED)? - Definition & Applications

In this lesson, we learn about light emitting diodes (LEDs), including what they are made of and how they work. We then explore their practical applications in our everyday lives.

Circuits, Circuit Boards & Semiconductors: Uses & Parts

13. Circuits, Circuit Boards & Semiconductors: Uses & Parts

Current flows through electronic circuits. Learn about the parts of a circuit and how circuits are built around circuit boards. Also, discover how semiconductors showed us the path to the small, but powerful integrated circuits of modern electronics.

What is an Integrated Circuit (IC)?

14. What is an Integrated Circuit (IC)?

In this lesson, we will learn about integrated circuits (ICs) and explore their origin, types, and benefits. We will also look at different ways that they are packaged.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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