The digital voltmeter is a versatile tool that can measure voltage, current and resistance. There are several selections on a meter in which to select. Select the letter "A" setting to measure the current or amperage in a circuit. The letter "V" is for voltage. Choose this setting to measure the voltage in a circuit. The resistance setting is not so obvious. Resistance is measured in ohms and is represented by the Greek symbol Omega.
Instructions
- 1
Insert the probes into the meter. Insert the red probe into the receptacle marked with the Omega symbol. Insert the black probe into the receptacle marked ground.
2Turn the knob to the correct resistance range. Most meters have the resistance broken into several ranges, 200 ohms, 2k (2,000) ohms, 20k (20,000) ohms, 200k (200,000) ohms and 2M (2,000,000) ohms. These different ranges help to fine-tune the resistance measurement. Selecting the wrong value will not damage the meter.
3Place the red probe on one end of the circuit and place the black probe at the other end of the circuit. The value in the display window is the resistance measurement.
