Digital Multimeter Test
DMM



1. To measure voltage, the selector on the DMM must be turned to
a. Any position; the meter automatically adjusts b. The “V” position c. The “A” position d. The “Ω” position
DMM


2. To measure the battery voltage, place the DMM probes
a. At H and C b. At B and G c. At B and E d. At D and F
Circuit


3. With the switch closed, the voltage between points G and F will measure about
a. The same as the battery voltage b. Half the battery voltage c. Zero d. Battery voltage divided by the resistor’s resistance



4. A DMM voltage reading of “9.48 mV” is equivalent to
a. 0.00948 V b. 0.948 V c. 0.849 V d. 948 kV
Circuit


5. While measuring the voltage drop across the resistor
a. The battery polarity must be reversed. b. The DMM probes must be connected at C and D. c. The DMM knob must be set on A. d. The switch must be closed.
DMM


6. To measure current, the selector on the DMM must be turned to
a. The “A” position b. The “Ω” position c. Any position; the meter automatically adjusts. d. The “V” position
Circuit


7. To find the current through the resistor, set the selector for measuring current,
a. Close the switch, and place the DMM probes at B and C. b. Open the switch, and place the DMM probes at D and E. c. Open the switch, and place the DMM probes at G and F. d. Close the switch, and place the DMM probes at B and G.
Circuit


8. One way to find the resistance of the resistor, is to apply Ohm’s Law by
a. Closing the switch, and measuring the current with probes at D and E, and the voltage with probes at B and C. b. Opening the switch, and measuring the current with probes at F and G, and then closing the switch and measuring the voltage with probes at B and C. c. Closing the switch, and measuring the current with probes at B and G, and then opening the switch and measuring the voltage with probes at D and E. d. Opening the switch, and measuring the current with probes at D and E, and the voltage with probes at F and G.



9. Suppose you measure the voltage with the red probe on the “+” battery terminal and black probe on the “–” terminal. If you reverse the red and black probes,
a. It doesn’t matter—you’ll see the same voltage reading both times. b. The voltage will read zero when you reverse the probes. c. The value in the display will be the same, but with a different sign (positive or negative). d. The reading in the display in the second case will be the reciprocal of the first reading.
Circuit


10. With DMM selector knob turned to Ω, you can measure the resistor by
a. Opening the switch and placing the probes at C and H. b. Closing the switch and placing the probes at C and G. c. Closing the switch and placing the probes at B and C. d. Opening the switch and placing the probes at F and G.
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