Ch 25: Praxis General Science: Potential & Capacitance

About This Chapter

Sharpen your skills using the lessons in the Potential & Capacitance chapter of our Praxis General Science test prep course. Let us help you build on what you already know and increase your chances of scoring well on the Praxis General Science exam.

Praxis General Science: Potential & Capacitance - Chapter Summary

Reexamine the ways in which electrical energy flows, is stored and converted in these lessons. As you work through them, you will review the following material:

  • Understanding electric fields
  • Sources of voltage and energy conversion
  • Definition and explanation of electric potential energy
  • Understanding charge collections and volt unit
  • Capacitance, types and units of capacitors
  • Definition and explanation of Ohm's Law
  • Potential of cylinders and spheres

We place everything you need at your fingertips throughout these educational lessons. After you complete each lesson, take a quiz that can help you to check your retention of the information. The chapter tests measure your progress overall. The mobile nature of our study guide enables you to access it from any device that can connect you to the Internet, so you can take your work with you should the need arise.

10 Lessons in Chapter 25: Praxis General Science: Potential & Capacitance
Test your knowledge with a 30-question chapter practice test
Electric Field & the Movement of Charge

1. Electric Field & the Movement of Charge

After watching this video, you will be able to explain what an electric field is, draw electric field lines and vectors for charged particles, and complete calculations involving electric fields. A short quiz will follow.

Voltage Sources: Energy Conversion and Examples

2. Voltage Sources: Energy Conversion and Examples

We use them every day, but no one really gives them much thought. What are we talking about? Why, voltage sources, of course! Batteries and generators are two of the most common sources of voltage that power our daily lives. We'll look at them in detail to see how they work.

Electric Potential Energy: Definition & Formula

3. Electric Potential Energy: Definition & Formula

After watching this video, you will be able to explain what electric potential energy is and use an equation to solve electric potential energy problems involving point charges. A short quiz will follow.

Electric Potential: Charge Collections and Volt Unit

4. 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.

Capacitance: Units & Formula

5. 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.

Fixed & Variable Capacitors: Parts & Types

6. Fixed & Variable Capacitors: Parts & Types

Capacitors are devices that store electrical energy. In this lesson, we will explore the various types of capacitors, how they work, and how to calculate equivalent capacitance.

Capacitors: Construction, Charging & Discharging

7. 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.

Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance

8. 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.

The Potential of a Sphere

9. 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.

The Potential of a Cylinder

10. The Potential of a Cylinder

After watching this video, you will be able to explain what electric potential is and solve problems using an expression for the electric potential of a cylinder. In AP Physics C, you should be able to derive the expression. A short quiz will follow.

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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