The work to move a charge through a uniform electric field is determined. An electron volt is defined.

This video shows how to prove that the electric field outside a uniformly charged sphere is the same as if the charged sphere were a point particle. Using Gauss' law, the electric field is shown to be constant and dependent only on the...

AP Physics C: Electricity and Magnetism review of Current, Resistance, and Simple Circuits including: deriving electric current in terms of drift velocity, current density version of Ohm’s law, defining resistivity, deriving resistance,...

Review of the Electricity topics covered in the AP Physics 1 curriculum.

Series circuits DC Direct current. In this video we learn how DC series circuits work, looking at voltage, current, resistance, power consumption as well as how to use a multimeter. There's also a problem at the end of the video for you...

AP Physics C: Electricity and Magnetism review of series and parallel circuits including: derivations of equations for resistors in series, resistors in parallel, capacitors in parallel, and capacitors in series, and where to place...

Parallel Circuits Explained. In this video we take a look at how DC parallel circuits work and consider voltage, current, resistance, power consumption as well as some worked examples and some test questions with solutions.

We have probably heard that neurons are the cells that transmit information around the body. But how does this work? Is it actual electricity? Like from the wall socket? What is a synapse? What happens there, in between one neuron and...

In this video, we're going to answer the question: Why are resistors used?

AP Physics C: Electricity and Magnetism review LR circuits including the basics of how an LR circuit works, the limits, derivations of current as a function of time and time rate of change of current as a function of time, graphs...

AP Physics C: Electricity and Magnetism review of Conductors in Electrostatic Equilibrium including: defining conductors which are in electrostatic equilibrium, deriving the electric field inside the conductors, electrostatic shielding,...

AP Physics C: Electricity and Magnetism review of RC circuits including: defining RC circuits, charging a capacitor through a resistor, determining the limits for charge and current, deriving charge and current as functions of time,...

AP Physics C: Electricity and Magnetism review of Electric Potential including: derivation of electric potential energy, derivation of electric potential and electric potential difference, a discussion of the electronvolt, electric...

Demonstrating the equipotential lines of an electric dipole.

AP Physics C: Electricity and Magnetism review inductance, inductors, and self-inductance. The equation for the inductance of an ideal solenoid is derived. The differences between resistance, resistors, resistivity, inductance,...

How does a battery work? Now that you think about it, you have no idea, do you? Well take a gander! Turns out it's just redox chemistry.

Ohms Law Explained. In this video we take a look at Ohms law to understand how it works and how to use it. We look at voltage, current, resistance and the relationship between these. We also use ohms triangle to solve examples.

DC Motor explained - in this video we look at how does a dc motor work to understand the basic working principle of a DC motor. We consider conventional current, electron flow, the winding, armature, rotor, shaft, stator, brushes, brush...

AP Physics C: Electricity and Magnetism review of electric flux to understand magnetic flux, an example of magnetic flux through a current carrying wire loop, Gauss’s Law for Magnetism, electromagnetic induction, Faraday’s law, Lenz’s...

Whenever you plug something into an electrical socket, don't you wonder what's going on? Well you should, as it's pretty neat. What is electricity made of? How did we figure out how to harness this power? Let's take a look!

We've learned about the types of muscle, including skeletal muscle, and we know then when these muscles contract, we are able to move our bodies around. But how exactly does this happen on the molecular level? There is an astonishing...