In this animated activity, students view how the Wheatstone bridge is used to activate a temperature alarm. A short quiz completes the lesson.

In this animated object, learners examine the mechanical configuration of a three-way switch and how it operates in a circuit. They also view diagrams showing the use of an ohmmeter to determine the electrical connections.

Learners examine a general approach to solving for the current through, the voltage across, and the power dissipated by each resistor in a series DC circuit. A three-resistor series circuit is used as an example.

In this learning activity you'll determine the voltages that can be topped off of a multi-resistor voltage divider that has one main power source.

Learners solve 14 problems related to voltage, current and power in a single source, six-resistor circuit. A help screen is provided.

Students view the development of the transfer function for a RC high pass filter. They also read how a Bode plot is developed through simple approximation techniques for both the magnitude and phase.

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.

In this learning activity you'll review the various ways to calculate the total power consumed in a series circuit.

Learners read an explanation of how to troubleshoot a faulty digital-to-analog converter that has a shorted input.

Learners read a description of how an oscilloscope is used to measure the frequency of a sine wave.

Learners review Kirchhoff's Current Law and work six practice problems. Feedback is given.

Learners read an explanation of the RL time constant and examine the formula for calculating the instantaneous current value. The current is graphed as it climbs to maximum or drops to zero. Note* In the formulas in this module, the Greek letter epsilon should be the mathematical constant 'e'.

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

Learners are introduced to the maximum power transfer theorem. Examples show the load as it varies and the results are graphed.

Learners review Kirchhoff's Voltage Law and work six practice problems. Feedback is given.

In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.

Learners read about the vector diagram for a parallel RL circuit. This animated lesson presents information on current flow through each branch, total current, and phase angle.

In this interactive object, learners solve for the current through each resistor, the voltage across each resistor, and the power dissipated.

Students view a demonstration of Kirchhoff's Current Law (KCL) using complex numbers with respect to ac.

Learners view the steps for testing a capacitor with an analog ohmmeter. A brief quiz completes the object.

In this screencast, learners examine the physical facets that determine the value of a capacitor.

Students complete a sample exam for DC/AC I. It provides an overview of the material presented in the course.

Learners examine the correct method for calculating complex reciprocals. The solution for total impedance of a parallel circuit in rectangular form is shown.

In this interactive object, learners vary the value of the resistance to see how it affects current. Example problems are included.

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