Q: I have a tenant who complained that a light fixture wouldn’t light. After I replaced the switch, the light still wouldn’t come on. I realized that all the bulbs were out. Anyway, is there a way to ...

For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

A multimeter or digital multimeter (DMM) is one of the most essential and common pieces of lab equipment. Multimeters are used for taking basic electrical measurements related to Ohm’s Law.