Wikimedia
Wikipedia: Ohm's Law
Wikipedia provides information on Ohm's Law, stating that the voltage drop is proportional to the current running through it.
University of Waterloo (Canada)
Computer Assisted Chem. Tutorial/chemistry of Batteries
A superb explanation of how a battery works. Discusses the associated chemistry which explains how a battery produces a voltage. Includes a series of "Confidence Building Questions."
![Need: Measuring Electricity [Pdf] Handout](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Need: Measuring Electricity [Pdf] Handout")
Other
Need: Measuring Electricity [Pdf]
This site details many of the ways in which to measure electricity. Among the topics covered by this page is resistance and voltage as well as electrical energy and Ohm's Law.
Sophia Learning
Sophia: Electric Circuits: Lesson 3
This lesson will explain how to calculate voltage, current, and resistance in simple electric circuits. It is 3 of 4 in the series titled "Electric Circuits."
TeachEngineering
Teach Engineering: Completing the Circuit
In the everyday electrical devices we use - calculators, remote controls and cell phones - a voltage source such as a battery is required to close the circuit and operate the device. In this hands-on activity, students use a battery,...
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...
TeachEngineering
Teach Engineering: Electrons on the Move
Students learn about current electricity and necessary conditions for the existence of an electric current. Students construct a simple electric circuit and a galvanic cell to help them understand voltage, current and resistance.
Oswego City School District
Regents Exam Prep Center: Electricity: The Mouse Cheese Analogy
This page uses a mouse and cheese analogy to show the relationships involved in electricity through currents and charges. Among the topics covered by the analogy are voltage, resistance and electromagnetism.
Physics Aviary
Physics Aviary: Practice Problems: Rc in Ac Problem
Determine the rms current and voltage in an RC circuit powered by an AC power supply.
Physics Aviary
Physics Aviary: Practice Problems: Rl in Ac Problem
Determine the rms current and voltage in an RL circuit powered by an AC power supply.
Physics Aviary
Physics Aviary: Practice Problems: Rlc in Ac Problem
Determine the rms current and voltage in an RLC circuit powered by an AC power supply.
Physics Aviary
Physics Aviary: Practice Problems: Parallel Circuit With Internal Resistance
Find the terminal voltage of a battery with significant internal resistance. Determine the power of one of the external components for the circuit.
Physics Aviary
Physics Aviary: Simple Circuit Lab
This lab is designed to have students investigate the relationships between voltage, resistance and current in a circuit with only one passive component. The batteries in this simulation can be varied from ideal batteries to batteries...
Physics Aviary
Physics Aviary: Parallel Circuit Lab
This lab is designed to have students investigate the relationships between voltage, resistance and current in a parallel circuit with up to three passive components. The batteries in this simulation can be varied from ideal batteries to...
Physics Aviary
Physics Aviary: Internal Resistance of Battery
This lab is designed to have students look at the change in the terminal voltage of a battery that occurs as you draw more current from the battery.
TeachEngineering
Teach Engineering: Get Charged!
Students are introduced to the idea of electrical energy. They learn about the relationships between charge, voltage, current and resistance. They discover that electrical energy is the form of energy that powers most of their household...
Concord Consortium
Concord Consortium: Sparks Tutorial: Finding the Cutoff Frequency
AC circuits with capacitors and inductors respond to the frequency, as well as the voltage. Find the frequency value that reduces the circuit power to half the maximum.
Concord Consortium
Concord Consortium: Dc Circuits: Parallel Resistances (Sparks 2)
Explore circuits with resistors in parallel and answer questions regarding voltage drops across resistors and currents through them in such circuits.
Concord Consortium
Concord Consortium: Dc Circuits: Series Resistances (Sparks 1)
This interactive simulation guides you through the wiring of the standard breadboard and presents you with questions regarding voltage drops and currents in series resistive circuits.
Concord Consortium
Concord Consortium: Dc Circuits: Series Parallel Resistances (Sparks 3)
Answer questions regarding voltage drops across resistors and currents through them in such circuits. Practice calculating the effective resistances of a set of resistances in series and parallel.
CK-12 Foundation
Ck 12: Physical Science: Electric Current
[Free Registration/Login may be required to access all resource tools.] Explains what electric current and voltage are and why electric current occurs.
Khan Academy
Khan Academy: Electrical Engineering: Introduction
Some basic concepts to introduce the electrical engineering course. Become familiar with engineering numbers and notation, and learn about the two most important electrical quantities: current and voltage.
Khan Academy
Khan Academy: Electrical Engineering: Electrostatics
Electrostatics is the study of forces between charges, as described by Coulomb's Law. We develop the concept of an electric field surrounding charges. We work through examples of the electric field near a line, and near a plane, and...
Georgia State University
Georgia State University: Hyper Physics: Ohm's Law and Current Law
At this site from Georgia State University Ohm's law is stated in words and using equations. A JavaScript form allows for multiple practice problems with instant feedback and reinforcement. Kirchoff's current law is stated and...
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