About This Chapter
Understanding Electrostatics - Chapter Summary
The lessons in this chapter can assist you with understanding electrostatics. Our expert instructors help you explore key topics such as dipole fields, capacitance, displacement currents and more. After completing the chapter, you should be prepared to:
- Detail how Coulomb's law explains the relationship between force and charge
- Solve problems related to the strength of an electric field
- Define dipole fields
- Discuss Gauss' law and use it to solve problems
- Explain how charge collections and volt units are related to electrical potential
- Use the equation for the potential of a sphere and graph electric potential
- Define capacitance and use capacitance equations to solve problems
- Perform calculations related to series and parallel capacitors
These text and video lessons are brief and engaging, which helps you quickly and easily get up to speed on key electrostatics topics. Each video also comes with a full written transcript for a text-based alternative. Vocabulary words are highlighted in bold print for easy identification. If you get stuck on a particular topic, use the Help tab or your Dashboard to submit questions to the instructors.
1. Coulomb's Law: Variables Affecting the Force Between Two Charged Particles
In the 18th century, Charles Coulomb uncovered the secrets of electrostatic force between charged particles. The results of his experiments led to what is now known as Coulomb's Law, which tells us how force, charge, and distance are all related.
2. Strength of an Electric Field & Coulomb's Law
After watching this lesson, you will be able to explain what an electric field is, distinguish between scalar and vector fields and use two electric field equations to solve problems. A short quiz will follow.
3. Dipole Fields: Definition & Examples
In this lesson, we will learn what a dipole field is, and how to calculate the electric field strength at different points in the field. We will also look at some example calculations.
4. Gauss' Law: Definition & Examples
After watching this video, you will be able to explain what Gauss' Law is, derive Gauss' Law for a sphere and cylinder, and use it to solve problems. A short quiz will follow.
5. Electric Potential: Charge Collections and Volt Unit
In this lesson, we'll find out that electric charges can be rather lazy until something motivates them to get work done. Find out what gives electric charges the potential to do work and how we measure that potential with something called voltage.
6. The Potential of a Sphere
After watching this lesson, you will be able to explain what electric potential is, state and use the equation for the potential of a sphere, and plot a graph of electric potential with radius. A short quiz will follow.
7. What is Capacitance? - Definition, Equation & Examples
Capacitors are used to store and quickly release large amounts of electrical energy. In this lesson, we will learn how capacitors are created and used and how your body can function as a capacitor.
8. Capacitance: Units & Formula
After watching this lesson, you will be able to explain what a capacitor is, define capacitance, and solve simple problems using capacitance equations. A short quiz will follow.
9. Series & Parallel Capacitors
A capacitor is used to store electrical energy in a circuit. In this lesson, learn how to calculate the equivalent capacitance of circuits containing series and parallel capacitors.
10. Capacitors: Construction, Charging & Discharging
Electrical circuits have several components, each of which must be understood for the system to work. We're going to check out capacitors in this lesson and see how they can be used to control an electric current.
11. 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.
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