In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.

In this animated lesson, students read an analogy comparing water in a "special" water tank to the current "flow" through a capacitor.

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.

Learners examine an animation that shows how an AC voltage is produced as an armature rotates within a magnetic field. Ten review questions complete the learning object.

Students solve practice problems on voltage, current, and impedance matching. Examples precede the problems.

Learners study the factors that determine the frequency of an AC generator, such as the rotational speed of the armature or the number of stator poles.

The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.

Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.

Students answer five questions concerning magnetism.

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.

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

The learner views a method to find the total complex power of a circuit in which the individual real and reactive powers are found and then added together. Several examples are shown, along with the power triangles.

Students calculate current, phase angle, resistor voltage, inductor voltage, and power.

Students read an explanation of power factor correction. Examples of both inductive and capacitive loads are given.

Students work six practice problems to determine the total impedance of a parallel circuit.

In this interactive object, students calculate inductive reactance, impedance, current, and power in parallel RL circuits.

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

In this 3D animated object, learners examine the way in which a three-phase generator produces three sine waves with three armature coils. A quiz completes the activity.

Learners view animations showing the operation of the internal parts of an AC generator. A short quiz completes the activity.