By Terry Bartelt
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I can't seem to find where to start this lesson of impedance.
Learners consider why an impedance matching transformer is needed to connect an antenna to a television.
Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.
In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.