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

The movement of an electrical charge through a medium that intermittently changes direction is called alternating current (AC). Learn about the definition of alternating current, advantages vs. disadvantages, and the difference between alternating and direct currents.

Impedance in Alternating Current Circuits

2. Impedance in Alternating Current Circuits

Impedance, in alternating current circuits, is another name for resistance. Study the AC circuits, impedance and resistors, reactance of capacitors and inductors, and an example calculation.

R-L-C Series Circuits

3. R-L-C Series Circuits

A resistance-inductance-capacitance (RLC) series circuit is comprised of a battery, resistor, inductor, and capacitor arranged so that there is only one path where electrical current can flow. Learn about the definition and equation of RLC series circuits, and check out some example calculations.

Electromagnetic Waves: Definition, Sources, Properties & Regions

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

Electromagnetic waves are created when there are vibrations between an electric and a magnetic field. This lesson explores electromagnetic waves, looking at the sources, properties and regions in which they exist.

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

Maxwell's equations describe the force of electromagnetism through differential equations. Explore the definition and application of Maxwell's equations and discover examples of these equations.

The Photoelectric Effect: Definition, History, Application & Equation

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

The photoelectric effect can be observed as light is shone on metal, causing electrons to be released. Learn the history of experimentation involving the photoelectric effect, Einstein's own explanatory equation, and the technological applications of the photoelectric effect.

What is a Photon? - Definition, Energy & Wavelength

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

A photon is a particle that represents the nature of electromagnetic radiation. Learn about the definition of a proton, the concept of a photon's energy, the wavelength of a photon, and how to calculate the energy of a photon.

Wave-Particle Duality & the Davisson-Germer Experiment

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

Wave-particle duality means that light and sub-atomic particles can also behave as waves, hence the duality. Study the definition of wave-particle duality, the Davisson-Germer Experiment, the de Broglie wavelength, and an example calculation.

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

Circuits, circuit boards, and semiconductors are all integral parts of managing current flow for electronic parts and circuitry. Learn the details of circuitry, circuit boards, and semiconductors to identify their uses and benefits to technology development.

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
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Practice Final Exam
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