How to Test if a Resistor Is Still Working Using a Multimeter

Learn how to check if a resistor is working by measuring its resistance with a multimeter. Easy steps to identify faulty resistors quickly.

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Use a multimeter: Set it to measure resistance and place the probes on either end of the resistor. If you get a steady reading matching the resistor's value, it works. Infinite or zero indicates it’s faulty.

FAQs & Answers

  1. How do you know if a resistor is bad? You can test a resistor with a multimeter set to measure resistance. A reading of infinite resistance or zero indicates the resistor is faulty.
  2. What resistance reading should a good resistor show? A working resistor will show a steady resistance reading that matches its labeled value or the color code on the resistor.
  3. Can I test a resistor without a multimeter? Testing a resistor without a multimeter is difficult and unreliable; using a multimeter is the most accurate method.

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