# Measure Voltage Using a Multimeter For this project, you will measure the AC voltage in a wall…

Measure Voltage Using a Multimeter

For this project, you will measure the AC voltage in a wall
outlet. You will need a multimeter and access to a working wall outlet.
Remember that the power is on in the outlet. Do not touch the ends of the
probes when measuring the outlet voltage.

1. Turn the function selector on the multimeter to the
250-volt mark on the ACV scale. There is no need to adjust the meter. It should

2. Insert the black probe in the common side (smaller slot)
of the outlet you are testing. Insert the red probe into the negative side
(larger slot) of the
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Measure Voltage Using a Multimeter

For this project, you will measure the AC voltage in a wall
outlet. You will need a multimeter and access to a working wall outlet.
Remember that the power is on in the outlet. Do not touch the ends of the
probes when measuring the outlet voltage.

1. Turn the function selector on the multimeter to the
250-volt mark on the ACV scale. There is no need to adjust the meter. It should

2. Insert the black probe in the common side (smaller slot)
of the outlet you are testing. Insert the red probe into the negative side
(larger slot) of the outlet.

3. Read the meter on the AC scale. What is the voltage

4. The entire AC scale on the meter represents 250 volts,
so each large mark on the scale denotes 25 volts (one-tenth of the 250 volt
total for the whole scale). What is the voltage of the outlet?

5. Remove the probes and change the function selector to
the 1,000 (1K) volt setting on the ACV scale.

6. Test the outlet again. What is the voltage?

7. At this setting, the scale represents 1,000 volts total,
so each large mark on it represents 100 volts. What is the voltage reading for
the outlet using this scale? Is it the same voltage as when you used the lower
250-volt scale?

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