What does a white resistor band represent as the first digit?

A white resistor band represents the number 9 as the first digit in the resistor color code system. The color code is used to indicate the values and tolerance of resistors, with specific colors corresponding to specific digits. In this system, each color is assigned a number from 0 to 9, where white is at the end of the scale and represents the highest digit, which is 9. Understanding how to read resistor color codes is essential for anyone working with electronic circuits, as it helps in identifying resistor values for effective circuit design and troubleshooting.