单选题When measuring AC current flow, you must always connect the meter （）Ain series with the power source and loadBin parallel with the power source and loadCinsuring correct polarityDusing the lowest range possible to prevent instrument damage
单选题
When measuring AC current flow, you must always connect the meter （）
A
in series with the power source and load
B
in parallel with the power source and load
C
insuring correct polarity
D
using the lowest range possible to prevent instrument damage
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