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.
Khan Academy
Khan Academy: Dc Circuit and Electrical Power Review
Review the components of a circuit and their symbols such as battery, resistor, and switch. Analyze how the power of a resistor is related to the current and electric potential difference across the resistor.
Science Buddies
Science Buddies: Sliding Light: How to Make a Dimmer Switch With a Pencil
In this electronics science fair project, students will make a simple dimmer switch and investigate the relationship between the resistance in the circuit and the amount of light produced. The Science Buddies project ideas are set up...
Concord Consortium
Concord Consortium: Measuring Current in Parallel Circuits
When measuring the current in parallel circuits, compare the circuit's total current with the current through just one resistor.
Georgia State University
Georgia State University: Hyper Physics: Resistor Combinations
At this site from Georgia State University parallel and series connections of resistors are explained and illustrated. Equations for computing the overal voltage, current, and resistance of such circuits are given and explained.
Walter Fendt
Walter Fendt: Electromagnetic Oscillating Circuit
This simulation is about an oscillatory electromagnetic circuit formed by a capacitor and an inductor.
TeachEngineering
Teach Engineering: Am I on the Radio?
During this activity, students create a working radio by soldering circuit components supplied from an AM radio kit. Since this activity is carried out in conjunction with the associated lessons concerning circuits and how an AM radio...
California Institute of Technology
Magnet Lab: Caltech Physics Applets
Although specifically designed for physics students at Caltech, anyone interested in learning more about electricity, magnetism or various other physical phenomena can benefit by exploring these interactive applets. A circuit tutorial...
TeachEngineering
Teach Engineering: Hands on Activity: Designing a Thermostat
By building a basic thermostat, students will explore basic circuitry and electricity. The thermostat built out of a breadboard, temperature sensor chip, amplifier, and battery creates a linear relationship between temperature of the...
Creative Science Centre
Creative Science Centre: Mobile Phone Absorption Wavemeter
An absorption wavemeter is a device which can make measurements on the strength of radio emissions and so this instrument is an essential item for investigating the mobile phone. In principle an absorption meter is a simple device that...