In this video, the relationship between current density, conductivity, and electric field is discussed, with a focus on Ohm's law and resistivity. The video also covers the differences between resistance and resistivity. The practical...

How does a battery work, learn from the basics where we use and battery and how batteries work. With thanks to Squarespace for sponsoring this video.

How to test a battery. Learn how to test a battery. How to use a multimeter to test a battery. What happens to the battery voltage under load. How to tell if the battery needs replacing.

Ground neutral and hot wires explained. In this video we look at the difference and purpose of the ground wire, the hot wire and the neutral wire in a north american residential electrical system. We look at ground faults, GFCI,...

Learn how AC voltage varies with AC since wave and how to calculate the Vrms root mean squared, vmax, peak voltage, the frequency and voltage of different countries.

How 120V / 240V electricity is distributed from the power station and to your property. We look at how it is connected to power domestic appliances as well as the main components such as the electricity meter, main service panel, main...

This brief video tutorial briefly discusses resting membrane potential: 0:00​​. Introduction 0:53. What is a resting membrane potential? 1:33. How is a RMP measured? 4:12. How do we get a RMP at cell membranes? 9:04. How is the RMP...

Calculus is used to derive the equation for the electric potential difference between two parallel plates of equal but opposite charge. It’s a uniform electric field. The significance of the negative in the equation is explained.

This problem is about Electric Power and Resistors in Parallel and Series.

This Free Response Question includes the following concepts: Circuit Diagram, Voltmeter, Resistance, Capacitance, Inductance, Potential Difference, Charge, and Electric Potential Energy

This Free Response Question includes the following concepts: Electrostatic Forces, Gauss's Law, Electric Fields and work done on a charged particle when moving through an electric potential difference.<br/>

My solutions to Free Response Question #4 from the 2019 AP Physics 1 Exam. This question is about electrical circuits and power. Also included are my reflections on how to get perform better on the exam.



This Paragraph...

This problem is about determining the constant electric field inside a parallel place capacitor in terms of electric potential and distance between the plates.

This problem is about what happens to the brightness of two light bulbs when you place a wire across the circuit which essential shorts out one of the two light bulbs.

This problem is about determining the electric potential across a single capacitor in a multi-capacitor circuit.

This problem is about the relationship between resistance, current and electric power.

This problem is about finding the electric potential differences across a resistor and capacitor around a loop using Kirchhoff's Rules.

My solutions to Free Response Question #1 from the 2017 AP Physics 1 Exam. This is an electric circuits question about ranking electric potential differences and electric power. Also included are my reflections on how to get perform...

This problem is about using the work done on a point charge to determine the electric potential difference.

These are my solutions to the Multiple Choice section of the Electricity and Magnetism portion of the 1998 AP Physics C released exam. AP® is a registered trademark of the College Board, which was not involved in the production of, and...

This Free Response Question includes the following concepts: Magnetic Forces, Current, Motional Emf, Newton's 2nd Law, Magnetic Flux, Electric Potential Difference, Current, Resistance, Electric Power, Terminal Velocity and using the...

My solutions to Free Response Question #4 from the 2016 AP Physics 1 Exam. This is a electric circuits question about ranking electric potential differences and currents. Also included are my reflections on how to get perform better on...

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

The video discusses the production of electromagnetic waves from atoms and nuclei. It covers different examples of producing radio waves, microwaves, x-rays, gamma rays, infrared radiation, visible light, and ultraviolet light. The video...