Learners compare electromagnetic quantities with the voltage, current, and resistance quantities of an electrical circuit. A brief quiz completes the object.

Learners examine the theory of operation for a combustible gas detector. A brief quiz completes the activity.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.

Learners examine the elements of a data file memory of an Allen-Bradley SLC-500 programmable controller. A quiz completes the activity.

In this learning activity you'll read the procedures for using the vertical function of an oscilloscope and view illustrations of waveforms.

Learners read a description of the function of the coupling switch on an oscilloscope and how its setting affects measurements of DC, AC, and combined voltages. A brief quiz completes the activity.

Learners view animations showing how hubs and switches work in local area network configurations.

In this learning activity you'll observe how switches are used in local area networks to increase data transmission speeds.

In this learning activity you'll review methods for testing an on/off switch with an ohmmeter and a voltmeter.