If a resistor has a value of 620k ohms, what are the colors of its first three bands?

To identify the color bands on a resistor based on its resistance value of 620k ohms, we first need to apply the resistor color code system. The first two significant digits of the resistance are represented by the first two color bands, while the third band indicates the multiplier.

In this case, the significant digits are 6 and 2. According to the color code:

• The number 6 corresponds to blue.

• The number 2 corresponds to red.

Next, for the multiplier, which in this case is 100, we need to represent the multiplier in terms of powers of ten. Since 620k ohms can be written as 620,000 ohms, the multiplier is three zeros, which corresponds to the color yellow.

Thus, the bands represent:

• First band (6) = blue

• Second band (2) = red

• Third band (multiplier of 100) = yellow

Therefore, the correct color bands for a resistor valued at 620k ohms are blue, red, and yellow.