NEW
Font size
WorksheetsResistors Color Code
Total questions: 25
Worksheet time: 14mins
How many color bands are typically found on a resistor?
4 or 5
2 or 3
8 or 9
6 or 7
What is the purpose of the color code on resistors?
To control the flow of electricity
To adjust the brightness of LEDs
To indicate resistance value and tolerance
To indicate the manufacturing date
If a resistor has the color bands: red, red, brown, gold, what is its resistance value?
220 ohms with a tolerance of ±5%
220 ohms with a tolerance of ±10%
200 ohms with a tolerance of ±5%
240 ohms with a tolerance of ±5%
A resistor has the color bands: yellow, violet, orange, silver. What is its resistance value?
39 kOhms
74 kOhms
50 kOhms
47 kOhms
Explain how to read the resistance value of a resistor using the color code.
Refer to the resistor's datasheet for the resistance value
Identify the color bands on the resistor, match each color to its corresponding number from the color code chart, then use the significant digits, multiplier, and tolerance to calculate the resistance value.
Use a multimeter to measure the resistance directly
Count the number of color bands on the resistor
Why is it important to understand the color code of resistors in electronics?
It allows the resistor to emit light.
It helps in determining the weight of the resistor.
It helps in determining the resistance value of the resistor.
It indicates the temperature at which the resistor operates.
What is the minimum value in the tolerance range of a resistor with color code Brown-Red-Brown?
108 Ω
144 Ω
116 Ω
96 Ω
What is the multiplier for color Green?
x10,000
x1,000,000
x100,000
x1,000
A 47 Kohm resistor would have which colours on its first three bands?
yellow, violet, white
red, white, blue
yellow, violet, orange
orange, yellow, violet
Which digit does the color orange denote on a resistor color band?
1
9
3
6
A resistor's first three color bands are red, yellow and black. What is its value?
420000 ohms
240 ohms
24 ohms
32 ohms
A resistor's first three color bands are brown, green and red. What is its value?
2000 ohms
510 ohms
250 ohms
1500 ohms
Which of these colors is NOT used in the resistor value color code?
white
black
violet
pink
A 4 band resistor's first three color bands are brown, black, and red. What is its value?
10 Ω
10 kΩ
200 Ω
1000 Ω
Which digit on the 1st band does the color yellow denote on a resistor color band?
3
2
4
7
The gold color band refers to a tolerance of _________.
+ / - 20%
+ / - 10%
+ / - 5%
zero
What are the colors for a 4 band 470K ohm resistor?
Orange, Grey, Orange
Yellow, Violet, Yellow
Yellow, Violet, Orange
Orange, Grey, Yellow
What is the tolerance for a Red, Brown, Brown, Silver resistor?
1%
20%
5%
10%
What color has a multiplier of x1000 ?
Red
Orange
Blue
Brown
What is the value for a 4 band Orange, Black, Red resistor?
3 kΩ
200 Ω
2 kΩ
300 Ω
What is the resistance for a 4 band Red, Green, Blue color resistor?
250,000 Ω
25 kΩ
25,000,000 Ω
250 kΩ
What is the maximum possible value of a resistor with color code Red-Violet-Orange-Gold?
29,700 Ω
32,400 Ω
28,350 Ω
27,000 Ω
What is the minimum possible value of a resistor with color code Brown-Red-Brown?
108 Ω
144 Ω
116 Ω
96 Ω
The first two color bands are __________.
Always Red In Color
Digits
Tolerance
Gold or Silver
The third color band is a _______ or __________.
Gold or Silver
Green or Blue
2k or 5k ohms
multiplier or the number of zeros
