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Oliver Johnson——Works at the International Development Association, Lives in Washington, D.C., USA.
a. Measure the voltage of a 9-volt battery: Set the
multimeter to the --20
DCV-- setting so that the meter will measure DC voltage. Touch the red meter wire to the positive terminal of the battery, the black meter wire to the negative terminal and record the value (see Figure 3).Jan 10, 2018
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