The next three steps will show you how to measure resistance with your multimeter.

To begin, make sure no current is running through the circuit or component you want to measure. Switch it off, unplug it from the wall, and remove any batteries.

Remember that you'll be measuring the resistance of the entire circuit. If you want to measure an individual component such as a resistor, measure it by itself—not with it soldered in place!

Plug the black probe into the COM port on your multimeter.

Plug the red probe into the port labeled with an Ω symbol (in this case, the right port).