Question

you suspect that the power supply in your desktop pc is failing. you want to use a multimeter to test the power supply. which multimeter setting should you use?
dc volts
watts
ohms
ac volts

Explanation:

Desktop PC power supplies output direct - current (DC) voltage. To test the power supply with a multimeter, you need to measure the DC voltage. Watts measure power, Ohms measure resistance, and AC volts are for alternating - current voltage which is not relevant for testing a PC power supply's output.

Answer:

DC volts