By Terry Bartelt
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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.
In this animated activity, students read about the two general types of variable resistors: potentiometers and rheostats. They then answer six multiple-choice questions.
In this animated activity, learners examine the operation of hydraulic directional control valves and the internal components that divert the fluid.