In this interactive and animated object, learners examine how dc voltages develop across capacitors that are connected in series and in parallel.

In this animated activity, learners view the following physics concepts in action: force, friction, horsepower, work, power, inefficiency, resistance, inertia, and energy.

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.

Learners study an animated PLC counting operation and examine how the count is automatically reset.