Learners review the VDR and work six problems. Immediate feedback is given.

Learners examine the wiring of the primary components of the three types of DC motors, series, shunt, and compound. The operational characteristics of each type of motor are described. A quiz completes the activity.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Students are introduced to the non-inverting amplifier configuration. The formulas for closed loop gain and bandwidth are shown, and an example is given.

Learners examine the characteristics of a sine wave and the various ways to describe it including Vp, Vp-p, Vrms, Vavg, and frequency.

In this learning activity you'll explore the functions and proper operation of a digital multimeter.

In this learning activity you'll explore the operation of frequency division using several different types of counters.

Learners read about the concepts of true power, reactive power, and apparent power, and are introduced to the power factor formula. A short quiz completes the activity.

Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.

In this interactive object, learners work 12 problems dealing with dc circuit analysis.

Students complete 10 practice problems.

In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.

Students view several examples of how to determine the total impedance of a series circuit. The "j" term is used in all of the calculations.

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.

Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.

In this animated activity, students view the plastic pellets in a profile extrusion machine being melted as the temperature of the heating elements is elevated by a time proportioning control system.

Students read a definition of Kirchhoff's Voltage Law and view examples of its use.

Learners answer 14 questions about series-parallel DC circuits.

Students work nine practice problems to determine total series inductance. Immediate feedback is given.

The approach to dc circuit analysis is presented to the learner. The approach is demonstrated for the student.

Learners follow step-by-step instructions for calculating the square root of a number using the TI-83 Plus scientific calculator. Steps for determining impedance are also shown.

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

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

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