|  | 4.2 | Basics of Digital Multimeters
| 4.2.3 | Using a multimeter to make voltage measurements

In this lab you will use the multimeter to measure voltage. There are two types of voltage measurements. For your personal safety, and to protect the meter, it is important that you understand the difference. The two types are DC and AC. DC Voltage
The meter must be set to DC when measuring DC voltages. This includes the following:

- batteries
- outputs of computer power supplies
- solar cells
- DC generators

AC Voltage
The meter must be set to AC when measuring AC voltages. If you are measuring a wall socket, you must assume that line voltage is present. Line voltage is 120 V AC in the US, and 220 V AC in most other places around the world. Line voltage can kill you! You must remember to be very careful to use the correct setting on the multimeter.

| Lab Activity
| In this lab, you will demonstrate your ability to measure voltage SAFELY with the multimeter.

| Web Links
| Using a Multimeter