![]() The next stripe is the number of zeros that need to come after the first two digits, so if the third stripe is brown, as it is in the photograph above, then there will be one zero and so the resistor is 270Ω.Ī resistor with stripes brown, black, orange is 10 and three zeros so 10,000 Ω in other words 10 kΩ. The first two striped are the first two digits of the value, so red, purple means 2, 7. The resistor color code works like this, for resistors like this with three colored stripes and then a gold stripe at one end. These stripes tell you the value of the resistor. These resistors all look the same, except that they have different colored stripes on them. In this lesson, we are going to use four different values of resistor, 270Ω, 470Ω, 2.2kΩ and 10kΩ. These are called kilo-ohms and mega-ohms. Because an Ohm is a low value of resistance (it doesn't resist much at all), we also give the values of resistors in kΩ (1000 Ω) and MΩ (1000,000 Ω). The unit of resistance is called the Ohm, which is usually shortened to Ω the Greek letter Omega. ![]()
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