Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 300 · 40 questions

Remember (Digit, digit, zeros): black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ω; yellow-violet-brown = 470 Ω; red-red-red = 2200 Ω = 2.2 kΩ.

1. 1.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74000 Ω resistor? (a) yellow-violet-orange (b) violet-yellow-orange (c) violet-yellow-red (d) violet-yellow-yellow
3. 3.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-brown (b) red-orange-red (c) red-orange-orange (d) orange-red-red
6. 6.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
7. 7.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
10. 10.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) green-brown-black (b) yellow-brown-brown (c) brown-yellow-black (d) yellow-brown-black
12. 12.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-red (b) grey-orange-orange (c) orange-grey-yellow (d) orange-grey-orange
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-brown (b) yellow-orange-red (c) orange-yellow-red (d) orange-yellow-orange
15. 15.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) white-grey-black (b) white-black-black (c) grey-black-brown (d) grey-black-black
18. 18.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 In the resistor colour code, which number does white stand for?
20. 20.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 In the resistor colour code, which number does yellow stand for?
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-orange (b) red-black-red (c) orange-red-orange (d) red-black-yellow
23. 23.🌈 In the resistor colour code, which number does brown stand for?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 380 Ω resistor? (a) grey-orange-brown (b) orange-grey-red (c) orange-grey-brown (d) orange-grey-black
25. 25.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) violet-grey-black (b) violet-grey-brown (c) grey-grey-black (d) grey-violet-black
27. 27.🌈 In the resistor colour code, which number does blue stand for?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-orange (b) violet-yellow-red (c) yellow-violet-red (d) yellow-violet-brown
29. 29.🌈 In the resistor colour code, which number does orange stand for?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9600 Ω resistor? (a) white-blue-orange (b) white-blue-brown (c) blue-white-red (d) white-blue-red
31. 31.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-yellow (b) green-orange-orange (c) orange-green-red (d) orange-green-orange
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) brown-green-brown (b) red-green-black (c) green-brown-black (d) brown-green-black
34. 34.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) red-brown-orange (b) brown-red-yellow (c) brown-red-red (d) brown-red-orange
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) brown-white-orange (b) brown-white-brown (c) brown-white-red (d) white-brown-red
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-yellow-brown (b) yellow-yellow-red (c) yellow-green-red (d) yellow-yellow-orange
38. 38.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) yellow-brown-black (b) brown-orange-black (c) orange-brown-brown (d) orange-brown-black

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