Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 489 · 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.🌈 In the resistor colour code, which number does blue stand for?
2. 2.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) violet-green-red (b) green-violet-brown (c) violet-green-brown (d) violet-green-black
4. 4.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
6. 6.🌈 In the resistor colour code, which number does brown stand for?
7. 7.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) blue-orange-red (b) orange-blue-brown (c) orange-blue-orange (d) orange-blue-red
9. 9.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) red-yellow-brown (b) yellow-red-black (c) yellow-red-red (d) yellow-red-brown
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) brown-orange-red (b) orange-brown-brown (c) orange-brown-red (d) orange-brown-orange
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) red-brown-brown (b) brown-red-brown (c) brown-red-red (d) brown-red-black
15. 15.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
16. 16.🌈 In the resistor colour code, which number does orange stand for?
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-red (b) violet-orange-orange (c) orange-violet-orange (d) orange-violet-yellow
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5700 Ω resistor? (a) violet-green-red (b) green-violet-brown (c) green-violet-red (d) green-violet-orange
19. 19.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
21. 21.🌈 In the resistor colour code, which number does violet stand for?
22. 22.🌈 In the resistor colour code, which number does red stand for?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-yellow (b) red-brown-orange (c) brown-black-orange (d) brown-black-red
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-red (b) red-blue-red (c) blue-red-orange (d) blue-red-brown
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) orange-red-red (b) red-black-red (c) red-black-orange (d) red-black-brown
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-yellow (b) red-orange-orange (c) red-red-red (d) red-red-orange
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) blue-brown-brown (d) blue-brown-black
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) yellow-blue-red (b) blue-yellow-red (c) yellow-blue-brown (d) yellow-blue-orange
29. 29.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) violet-yellow-red (b) yellow-violet-brown (c) yellow-violet-red (d) yellow-violet-orange
34. 34.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-black (b) violet-green-black (c) blue-green-brown (d) green-blue-black
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) orange-violet-orange (b) orange-violet-brown (c) orange-violet-red (d) violet-orange-red
40. 40.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =

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