Yellow is __. (band code)

Yellow is __. (band code)

• A. 4
• B. 0
• C. 1
• D. 2

Answer: (A)

The color bands on resistors encode numbers, and yellow corresponds to the digit 4. In the standard mapping, black is 0, brown is 1, red is 2, orange is 3, yellow is 4, green is 5, blue is 6, violet is 7, gray is 8, and white is 9. So when you see yellow as part of the code, it represents 4, not 0, 1, or 2. This mapping is the basis for reading resistor values, with the first two bands giving the digits and the third band the multiplier.

The color bands on resistors encode numbers, and yellow corresponds to the digit 4. In the standard mapping, black is 0, brown is 1, red is 2, orange is 3, yellow is 4, green is 5, blue is 6, violet is 7, gray is 8, and white is 9. So when you see yellow as part of the code, it represents 4, not 0, 1, or 2. This mapping is the basis for reading resistor values, with the first two bands giving the digits and the third band the multiplier.