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.

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.

Learners follow step-by-step instructions for using an oscilloscope to measure DC voltages.

Students view a dc analysis of an emitter-biased NPN transistor.

In this screencast, students examine the difference between opens and shorts in an electrical circuit. A brief quiz completes the object. You may also be interested in AMT2404 Electrical Opens and Shorts

In this animated object, students examine the concept of wattage dissipation and the three Watt's Law formulas.

Learners examine the fundamentals of a pulse train. Concepts such as time on, time off, duty cycle, period, and frequency are covered.

Students view drawings of the emitter resistor bypass capacitor.

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

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.

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.

Students read about decibel power gain and decibel voltage gain. Examples are given for each.

Learners read a step-by-step approach on how to connect an ohmmeter when making measurements in this interactive lesson.

In this animated and interactive object, learners follow two methods for converting a hexadecimal number to a decimal number. They test their knowledge in exercises at the end of the learning object.

In this animated object, students observe how the pulsating DC output voltage of a full-wave rectifier is filtered by a capacitor.

In this animated and interactive object, learners examine why the voltage produced by an AC drive must be increased when its frequency is increased due to inductive reactance.

Learners review Ohm's Law and then work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and are asked to solve for the third.

In this animated learning object, students view the operation of an oscilloscope that is used to measure AC voltages. A brief quiz completes the activity.

Students view the mathematical expression of a sinusoidal waveform with respect to time (t) and solve five problems. The answers are provided so students may check their work.

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.