University of Colorado
University of Colorado: Ph Et Interactive Simulations: Circuit Construction Kit (Ac+dc)
This new version of the CCK adds capacitors, inductors and AC voltage sources to your toolbox! Now you can graph the current and voltage as a function of time. Java required.
Other
Ithaca Hs Ny/electrical Generator Ac or Dc/applet
What a lovely little applet! You can speed/slow it, change it from AC to DC, plot the voltage as it rotates, change direction, control other information. Real neat.
Science4Fun
Science4 Fun: Voltage, Current, and Resistance
Illustrated explanation of voltage, current, and resistance and the relationship between them.
Physics Aviary
Physics Aviary: Capacitor Charging Through a Resistor in Dc Lab
This lab is designed to have students investigate the factors that affect the rate at which a capacitor charges. Students can change the resistance and capacitance in the circuit and monitor the current, voltage and charge on the...
University of Guelph
University of Guelph: Physics Tutorials: Dc Circuits: Resistors in Parallel
Explains and illustrates the meaning of parallel connections. Discusses the voltage-current-resistance relationships for parallel connections of resistors. An example problem on parallel calculations can be accessed from this page.
PBS
Pbs Learning Media: Dc Circuit Builder
Play with resistors, light bulbs, wires, switches, a battery, voltmeters, and ammeters in this interactive circuit simulation.
University of Guelph
University of Guelph: Physics Tutorials: Dc Circuits: Resistors in Series
Explains and illustrates the meaning of series connections. Discusses the voltage-current-resistance relationships for series connections of resistors. An example problem on series calculations can be accessed from this page.
Science Buddies
Science Buddies: Build a Reed Switch Motor
After building a simple electric motor from a kit, with this experiment you can explore how voltage affects motor speed. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction,...
Concord Consortium
Concord Consortium: Using a Function Generator
See how a typical DC power supply provides a variable voltage source for DC circuits.
Boston University
Elementary Physics: Current and Resistance
A general summary of electrical resistance including a comparison of AC and DC current.
TeachEngineering
Teach Engineering: Introduction to Circuits and Ohm's Law
Students will explore the basics of dc circuits analyzing the light from light bulbs when connected in series and parallel circuits. Ohm's Law and the equation for power dissipated by a circuit will be the primary equations used. Using...
Tech Target
What Is: Resistance
A short summary of resistance and how it is measured. Including information on AC and DC.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Rc Circuit Model
An electrical circuit simulation modeling the behavior of a voltage source attached in a series to a resistor and capacitor.
Khan Academy
Khan Academy: Electrical Engineering: Circuit Analysis
Circuit analysis is the process of finding all the currents and voltages in a network of connected components. We look at the basic elements used to build circuits, and find out what happens when elements are connected together into a...
Concord Consortium
Concord Consortium: Sparks Tutorial: Using an Oscilloscope
Learn how to use an oscilloscope.
CK-12 Foundation
Ck 12: Fourth Grade Science: Physical Science: Electric Current
[Free Registration/Login may be required to access all resource tools.] Defines electric current and relates electric current to different materials (insulators and conductors).
Khan Academy
Khan Academy: Application of the Fundamental Laws
We solve a circuit by direct application of the fundamental laws: Apply element laws (Ohm's Law and the like) plus Kirchhoff's Laws to solve for the currents and voltages of a circuit.