Engine_2014 : Electricity - 681/2299
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| Before using an analog all-purpose electric measuring instrument (multimeter) utilizing internal batteries to supply power for resistance measurements, what should be done FIRST? |
| A) remove one of the batteries |
| B) remove all the batteries |
| C) calibrate using a known external resistance |
| D) select the proper resistance range and calibrate the meter for "zero" ohms |
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