In this animated object, learners examine how the rotation of an induction AC motor's armature slips behind the synchronous rotational speed of the stator's field to create magnetic fields. These fields interact and produce torque. A quiz completes the activity.

Learners view two animations that show the effects of eddy currents.

The operation of a hydraulic brake valve, including the internal components, is presented using animations.

Learners analyze a base-biased npn transistor circuit. A "help" screen is available.

Learners follow a methodical approach for the dc analysis of series-parallel circuits.

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how resistance decreases in a parallel circuit as branches are added.

Students study the concept that the voltage drop across a series circuit resistor is proportional to its resistance. They then complete a brief quiz.

Students review the Voltage Divider Rule and work practice problems.

Learners observe current flow throughout the series portion and branches of a parallel circuit. This animated activity includes calculations and a short quiz.

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