From the course: Electronics Foundations: Basic Circuits
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Measure resistance
From the course: Electronics Foundations: Basic Circuits
Measure resistance
- Since the actual value of a resistor can be anywhere within five or even 10% of its expected value, depending on the tolerance, sometimes I want to measure the actual resistance of a component before I use it in my circuit, and I can do that with my trusty old digital multimeter. To measure resistance, I'll have the black probe connected to the COM port and the red probe connected to the right port with the ohm symbol above it. Next, I'll need to turn the selector knob to the resistance measurement mode, which is indicated by the ohm symbol. My particular DMM has five possible ranges to choose from for measuring resistance, ranging from 200 ohms all the way up to 20 megaohms. If you have a fancier DMM with auto ranging capabilities, you won't need to worry about selecting a range. The range I select controls where the decimal point will be located on the output. So I can represent really large and really small…
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