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September 3, 2021 at 1:35 pm
#13406
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Keymaster
Hi Jose,
We explain the answer to that in the first video in Unit 3, “Electrical Measurements Refresher.”
Let me know if that doesn’t make it clear.
Also – remember that you need to earn 90% or higher on EACH quiz in the course to earn Certification. You scored 88.9% on the second attempt at the Unit 2 quiz. Do you know how to request a reset?