tmoney45
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Feb 15, 2011, 2:35 AM
Post #2 of 3
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Re: [yorled] Testing carbon resistor.
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Hello Yorled, Based on the color bands, it's a 20 ohm +/- 5% resistor. Red Blk = 20 and the next blk= zero (no) zeros afterwards. Gold = +/- 5% tolerance. Yes, you must short the probes and zero the ohmmeter seperately for each scale. If you try zeroing it on one scale, I'm sure you'll see that it needs to be zeroed on another scale. It's usually quite evident. Also, at low resistance readings like this, the leads become a significant part of the reading and how well you make contact with the resistor will have an effect.
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