How To Test Voltage With A Voltmeter. You can read our guide on AC and DC to understand the difference between the two more clearly. To do this Move the selector dial to select DC voltage measurement.
Your digital multimeter will show the voltage on the screen. On most manually ranging meters that will be. If you have a meter that must be set manually set the meters Function switch to DC Volts and set the Range switch to a scale that will allow you to read 12-volts.
That will not help you get accurate measurements.
Second we will measure the current. Its a good idea to write down the reading. If the transformer is working properly the voltage readings should be the same after each test. For measuring direct current ie in a battery you need to use DCV.
