Circuits
Contents
Introduction
Circuits make computers, digital cameras, and video games possible. Circuits are driving an unprecedented rate of change in how we live. In this topic you'll learn about the physics behind the electronic devices we use.
Ohm's law and circuits with resistors
In these videos and articles you'll learn how Ohm's law relates the voltage across a resistor, the current through a resistor, and the resistance of the resistor. You'll also learn how resistors in series and parallel combine to form an equivalent resistance. The resistivity of materials, power used by a resistor, and how to use voltmeters and ammeters will also be discussed.
11:39
Introduction to circuits and Ohm's law
Introduction to electricity, circuits, current, and resistance
11:08
Resistors in series
Resistors that come one after another
12:20
Resistors in parallel
Resistors that run alongside each other
7:07
Example: Analyzing a more complex resistor circuit
A hairy resistance problem
9:44
Analyzing a resistor circuit with two batteries
An example of simplifying a seemingly complicated resistor circuit
12:02
Resistivity and conductivity
Let's look at the properties of materials that cause a resistor to resist the flow of current
8:18
Voltmeters and Ammeters
Learn about the instruments we use to measure voltage and current
3:59
Electrolytic conductivity
Liquids can also conduct electricity
Circuits with capacitors
In these videos and articles you'll learn how capacitors store charge and energy. You'll also learn the relationships between capacitance, charge stored, energy stored, and voltage across a capacitor. Techniques for finding the equivalent capacitance for capacitors in series and parallel will be discussed. Lastly, you'll learn how a dielectric can change the amount of charge, voltage, and capacitance of a capacitor.
5:43
Capacitors and capacitance
A basic overview of capacitors and capacitance. By David Santo Pietro.
13:35
Capacitance
Introduction to the capacitance of a two place capacitor.
6:23
Energy of a capacitor
This video explains the potential of a capacitor and how they function in a circuit. By David Santo Pietro.
9:35
Capacitors in series
The effect on voltage and current when capacitors are constructed in series in a circuit. By David Santo Pietro.
10:01
Capacitors in parallel
The effect on voltage and current when capacitors are constructed in parallel in a circuit. By David Santo Pietro.
6:27
Dielectrics in capacitors
How dielectrics function in circuits. By David Santo Pietro.