By Ann Jadin
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Learners take a close look at the Edison Wire System and observe how the current values through the two lines and the neutral of the system change as the loads vary.
Learners view the waveforms and voltages of an Edison Three-Wire System and read a description of the polarities across the secondary of the center-tap transformer. This transformer supplies power to residential homes.
In this animated and interactive object, learners examine how blood flows through the heart and lungs. A brief quiz completes the activity.
Test your knowledge of Respiration Trivia!
You'll be introduced to respiratory terms.
You'll learn about respiration and blood flow. Can you answer these questions?