Decoding Resistor Values Using Color Bands

The video tutorial explains how to identify resistor values and tolerances using color codes. It covers the 4-band resistor system, where the first two bands represent significant figures, the third band is the multiplier, and the fourth band indicates tolerance. Examples are provided to demonstrate decoding resistors of different values, such as 270 kilo-ohms and 0.39 ohms. The tutorial also guides on determining the color bands for a 15 kilo-ohm resistor.

What is the primary purpose of the color bands on resistors?

• To make resistors look colorful

• To identify the resistance value and tolerance

• To indicate the manufacturing date

• To show the brand of the resistor

In a 4-band resistor, what do the first two bands represent?

• The multiplier

• The temperature coefficient

• The significant figures or digits

• The tolerance

How do you determine the reading direction of resistor bands?

• By the number of bands on each end

• By the thickness of the bands

• By the color of the first band

• By the space between the third and fourth bands

If a resistor has a first band of red and a second band of violet, what are the first two digits of its value?

• 27

• 72

• 37

• 73

What is the multiplier for a resistor with a third band of yellow?

• 1,000

• 100

• 10,000

• 10

For a resistor with a first band of orange and a second band of white, what is the initial value before applying the multiplier?

• 39

• 94

• 49

• 93

What color would the first band be for a 15 kilo-ohm resistor?

• Red

• Brown

• Green

• Blue

What is the tolerance indicated by a silver band on a resistor?

• 1%

• 5%

• 10%

• 20%