Sep 012014

How to use a multimeter to test resistors

Note: Due to the existence of a wide variety and types of multimeters we will explain the most common method for all of them

How to use a multimeter to test resistors - Analog multimeter

This is the case for the analog multimeter, although it can also be used with the digital multimeter.

The range selector of resistance is different from of the voltage and the current. When the function selector is in ohms, the measured result is multiplied by the factor that is showed in the range (look at the picture)

Common ranges are: Rx1, Rx10, Rx100, Rx1K, Rx10K, Rx1M


- K means Kilohms
– M means Megaohms

For example (Look at the yellow color on the picture)

The multimeter scale shows 4.7 and the range is: x 1000 or x 1K. The multimeter would be measuring a resistor value of 4.7 x 1000 = 4700, or 4.7 K (Kilohms).

Resistance range selector - How to use a multimeter to test resistors

It is very important to choose the right function and the range before making a measurement. If you make a mistake you can damage the multimeter.

Additionally, the analog multimeters have two knobs that allow you to adjust the needle to zero (rest position) and the other to adjust the reading of zero ohms (0).

To accomplish this you have to proceed as follows:

  1. put the function selector in Ohms
  2. put in the range selector in x 1
  3. join the test leads

At the end of the preceding process, the needle should be at 0 ohms, if not an adjustment have to be done with the knob, touching the multimeter leads together and checking that it reads 0 ohms.

Please like & share:

Related Post

Water level controller circuit Water level controller circuit This simple Water level controller circuit is useful to control the water level in a tank. It does this by turning O...
Temperature effects on resistance Temperature effects on resistance The resistor changes its value when the temperature changes. This is the reason why circuits that contain t...
The Binary Number System The Binary Number System (base 2) The Binary number system, unlike the Decimal number System, where they are allowed 10 digits (0 to 9), you only nee...
Joule’s Law. Energy dissipation on resistors Joule's Law - Energy and Power Relationship between Energy and Power Energy: is the capacity to do something (to perform some work). For example, ...
 Posted by at 4:38 pm

 Leave a Reply



You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>