Methods of Producing Electricity

By Terry Bartelt

In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.

Series-Parallel DC Circuits Analysis

By Patrick Hoppe

Learners follow a methodical approach for the dc analysis of series-parallel circuits.

Current in a Series Circuit

In this learning activity you'll determine what happens to current flow in a series circuit when the resistance is changed.

Resistor Color Code Practice

In this learning activity you'll build a resistor's color code based on the bands.

The Superposition Theorem

The superposition theorem is explained as it relates to dc circuit analysis. Examples are given.

Series-Parallel Circuit Analysis: Practice Problems Circuit 1

In this interactive object, learners analyze a series-parallel DC circuit problem in a series of steps. Immediate feedback is provided.

Schematic Diagram Symbols

In this learning activity you'll review various types of common components used in electronics and view their schematic diagram symbols.

What Is Electricity?

The learner studies how electrons travel from one atom to the next. Examples demonstrate how voltage is created by the use of a battery or through magnetism. A quiz completes the activity.

Shorts Affecting Current in a Series Circuit

In this learning activity you'll review how a short affects current flow and voltage in a series circuit.

The Magnetron Ignition System

Learners read an explanation of how the Magnetron Ignition System uses a solid state switching component, a step-up transformer, and magnetism to provide a high voltage spark in a one-cylinder combustion engine.

Abbreviations Representing Electrical Quantities

In this learning activity you'll identify abbreviations that represent quantities associated with electrical circuits.

Series Circuit Analysis Practice Problems Part 1

In this interactive object, learners solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.

Measuring Current in a Parallel Circuit

In this interactive learning object, students view the ammeter connections for measuring currents in a parallel circuit with three branches on an energy concepts lab board. A brief quiz completes the activity.

Effects of a Rheostat in a Series Circuit

In this animated object, learners examine how the way in which a rheostat is connected in series with other resistors causes current and voltage to change as the resistance is varied. A brief quiz completes the activity.

Series Circuit Analysis Practice Problems Part 2

In this interactive object, learners solve additional problems involving total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.

Rotating Vector Representation of the Sine Function

The learner will be able to represent steady-state AC sinusoidal signals using phasors, which will lead to a simplified technique of analyzing AC circuits in a very similar way that we analyze DC circuits.

Power Calculations in a Series/Parallel Circuit

In this learning activity you'll explore various ways to calculate the power consumed in a series/parallel circuit.

Proper Meter Placement

In this learning activity you'll read the steps for proper meter placement for the measurement of resistance, voltage, and current.

How Adding Parallel Branches Decreases Total Resistance

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how resistance decreases in a parallel circuit as branches are added.

Electrical Switches & Pushbuttons

In this learning activity you'll review the operation and schematic symbols of various types of switches and push buttons used for electronic circuits.

Parallel Inductance: Practice Problems

Students work nine practice problems to determine the total inductance of a parallel circuit. Immediate feedback is given.

Opens and Shorts in a Parallel Circuit

Learners examine the changes in current and voltage values in a parallel circuit when open and short conditions develop. Ohm's Law calculations are shown, and a brief quiz completes the activity.

Ammeter Circuit Connections

In this animated activity, students view a step-by-step approach of how to connect an ammeter to a circuit. A brief quiz concludes the lesson.

Series-Parallel Circuit Analysis Practice Problems: Circuit #5

Learners examine a series-parallel circuit and solve 14 problems related to voltage, current, and power. A help screen is provided.

Norton's Theorem

Learners follow the steps for reducing all of the elements of a complex circuit to a single current source and a single source resistance to create a simple circuit. Several examples are given for dc circuits. The conversion between Thevenin and Norton is also presented.