In this animated object, learners view the operation of an open-collector inverter with and without a pull-up resistor.

Learners examine the impedance matching capability of a transformer and how to select the proper turns ratio to achieve this function. A brief quiz completes the activity.

In this animated activity, learners examine how residual magnetism causes magnetic hysteresis.

This learning activity uses a water pressure analogy to present the concept that voltage pressure is required to cause current flow.

In this interactive object, students calculate capacitive reactance, phase angle, impedance, and power in series RC circuits.

In this animated and interactive object, learners examine how a variable voltage is obtained from a variable resistor that is wired as a potentiometer across a fixed DC power supply.

In this interactive object, students complete progressively more difficult exercises as a way to improve their ability to recognize resistor color code values.

In this animated activity, students read about the two general types of variable resistors: potentiometers and rheostats. They then answer six multiple-choice questions.

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

This game will review primary, secondary, warm and cool color schemes.