In this video Paul Andersen explains how the electric field strength decreases as the square of the radius as you move away from a point charge, or a uniform distribution of charge on a sphere. This is a direct application of Coulomb's...

As we learn more about electricity, we have to talk about fields. Electric fields may seem complicated, but they're really fascinating and a crucial part of physics. In this episode of Crash Course Physics, Shini chats about capacitors,...

So, how do those defibrillators you see on TV actually work? Surprise! Physics can explain! Okay buckle up, everyone! Today, Shini has the task of breaking down Electrical Potential Energy, Electric Potential, Voltage, Capacitors, Energy...

New ReviewIn this lesson, we explore the electric potential difference between two locations in the electric field of a point charge — one of the most essential concepts in AP Physics and introductory electrostatics. Using a positive point charge...

Electric potential can feel abstract, but it doesn’t have to be! In this Flipping Physics lesson, Mr. P and the gang use gravitational potential energy to make sense of electric potential and electric potential energy. You’ll see how...

Why is the electric potential energy of unlike charges negative? Why does it decrease as they get closer? In this Flipping Physics lesson, we graph electric potential energy vs. distance for a two-point charge system and use the shape of...

Learn the key principles of electrostatic equilibrium in this clear and engaging physics lesson from Flipping Physics. Discover why the electric field inside a conductor is zero, how excess charges distribute themselves on the surface,...

Dive deep into the concept of electric potential energy with Mr. P and the Flipping Physics crew! In this engaging physics lesson, we explore how electric potential energy compares to gravitational potential energy, using a thought...

First we solve for the electric potential along the axis of a uniform thin ring of electric charge. Then we use that electric potential to solve for the electric field at the same location.

The electric potential difference in a uniform electric field is derived and used to show lines of equal electric potential or equipotential lines. Equipotential lines and surfaces of point charges and dipoles are shown. The equation for...

0:00 Intro

0:25 Coulomb's Law (Electric F
orce)
1:25 Electric Field (Definition and Caused by a Poi
nt Charge)
1:58 Elect
ric Field Lines
2:23 Linear, Surface and Volumet
ric Charge Densiti
es
2:44...

This problem is about determining the work done on a point charge to move it from a point outside a nonconducting hollow insulating sphere with a charge uniformly distributed on its surface to the very center of the sphere.

This problem is about the net electric field caused by two positive charges.

Electric Field Due to a Ring of Charge

AP Physics C: Electricity and Magnetism review of continuous charge distributions including: derivation of the integral E Field equation, requirements specific to the AP curriculum, charge densities, a full solution to finding...

Electric fields are introduced. The electric field around a positive and negative point charge are shown and compared to the gravitational field around a planet. Uniform electric fields are shown. The electric field from two...

In this video, we will determine the electric field at point P, which is located a distance "a" to the left of a thin rod with a positive charge Q, uniform charge density λ, and length L. We will use Coulomb's law and an integral to...

Continuous charge distributions are introduced and Coulomb’s Law is used to derive the integral equation which is used to find the electric field caused by a continuous charge distribution. Charge densities are...

In this video, we will determine the electric field at point P, which is located on the axis of a uniformly charged ring of charge Q and radius a, a distance x from the center of the ring. We will use Coulomb's law and an integral to...

This nugget explains the mathematical expression of work done in displacing a unit positive charge from 1 point to another.

Coulomb’s Law is introduced and compared to Newton’s Universal Law of Gravitation. “Point Charge” is defined. Micro, Nano, and Pico prefixes are explained. Two basic example problems are solved. And a the fact that the electric force is...

AP Physics C: Electricity and Magnetism review of Electric Flux and Gauss’ Law including: Electric flux for a constant electric field, an example of the flux through a closed rectangular box, the electric flux from a point...

Two equal magnitude, but oppositely charge particles close to one another is often called an electric dipole. This shows the electric field caused by an electric dipole.

In this video, we learn how to determine the electric flux through a sphere that surrounds a positive point charge. We start by discussing the equation for electric flux and how it applies to uniform electric fields. We then move on to...