In the resistor color code, which color represents the first digit of 2?

In the resistor color code, the first digit is represented by the color red, which corresponds to the number 2. The resistor color code employs a specific system where different colors are assigned to different digits; for instance, 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. Thus, when deciphering the value of a resistor based on its color bands, the color red clearly conveys that the first digit of the resistor's value is 2.

This systematic color coding is vital for technicians, providing a quick and efficient way to assess resistor values without needing complex calculations or tools.