If the first two bands on a resistor are Green and Blue, what are the first two digits of the resistance value?

If the first two bands on a resistor are Green and Blue, what are the first two digits of the resistance value?

• A. 68
• B. 65
• C. 75
• D. 56

Answer: (D)

In the resistor color code, the first two bands are the significant digits. Read left to right, and convert each color to its digit: Black 0, Brown 1, Red 2, Orange 3, Yellow 4, Green 5, Blue 6, Violet 7, Gray 8, White 9. Green corresponds to 5 and Blue to 6, so the first two digits are 56. The remaining bands would indicate the multiplier and tolerance, but for this question you’re just identifying those two digits.

In the resistor color code, the first two bands are the significant digits. Read left to right, and convert each color to its digit: Black 0, Brown 1, Red 2, Orange 3, Yellow 4, Green 5, Blue 6, Violet 7, Gray 8, White 9. Green corresponds to 5 and Blue to 6, so the first two digits are 56. The remaining bands would indicate the multiplier and tolerance, but for this question you’re just identifying those two digits.