Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 99 · 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 blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
3. 3.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) yellow-yellow-black (c) orange-yellow-brown (d) orange-yellow-black
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) white-grey-red (b) grey-white-orange (c) grey-white-brown (d) grey-white-red
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67000 Ω resistor? (a) blue-violet-yellow (b) violet-blue-orange (c) blue-violet-orange (d) blue-violet-red
7. 7.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
8. 8.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) green-orange-yellow (b) green-orange-red (c) orange-green-orange (d) green-orange-orange
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99000 Ω resistor? (a) white-white-orange (b) white-black-orange (c) white-white-red (d) white-white-yellow
11. 11.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
12. 12.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-red (b) white-black-brown (c) brown-white-brown (d) white-black-black
15. 15.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
16. 16.🌈 In the resistor colour code, which number does yellow stand for?
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) violet-green-black (b) green-violet-black (c) violet-green-brown (d) grey-green-black
18. 18.🌈 In the resistor colour code, which number does violet stand for?
19. 19.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) brown-orange-red (b) orange-brown-orange (c) orange-brown-brown (d) orange-brown-red
22. 22.🌈 In the resistor colour code, which number does red stand for?
23. 23.🌈 In the resistor colour code, which number does grey stand for?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-red (b) brown-green-orange (c) green-brown-orange (d) green-brown-yellow
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) yellow-white-black (b) white-yellow-brown (c) brown-yellow-black (d) white-yellow-black
26. 26.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-black-black (b) brown-black-black (c) brown-black-brown (d) red-brown-black
29. 29.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 In the resistor colour code, which number does green stand for?
32. 32.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) orange-yellow-red (b) orange-yellow-brown (c) orange-yellow-black (d) yellow-orange-brown
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-black (b) violet-black-brown (c) grey-black-black (d) grey-violet-black
36. 36.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) yellow-blue-red (b) yellow-blue-black (c) yellow-blue-brown (d) blue-yellow-brown
39. 39.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-black (b) blue-black-brown (c) blue-black-red (d) violet-blue-brown

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