Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 814 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-black (b) green-white-black (c) yellow-white-brown (d) white-yellow-black
2. 2.🌈 In the resistor colour code, which number does violet stand for?
3. 3.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
6. 6.🌈 In the resistor colour code, which number does green stand for?
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-red (b) orange-red-orange (c) orange-red-yellow (d) red-orange-orange
8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) violet-white-yellow (b) violet-white-orange (c) white-violet-orange (d) violet-white-red
10. 10.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) brown-white-orange (b) white-brown-orange (c) white-brown-red (d) white-brown-yellow
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) blue-orange-red (b) orange-blue-orange (c) orange-blue-red (d) orange-blue-brown
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-brown (b) green-blue-black (c) violet-green-black (d) blue-green-black
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-grey-black (b) violet-violet-brown (c) violet-violet-black (d) grey-violet-black
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-red (b) yellow-brown-yellow (c) yellow-brown-orange (d) brown-yellow-orange
16. 16.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-brown (c) yellow-green-black (d) green-yellow-black
20. 20.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
21. 21.🌈 In the resistor colour code, which number does yellow stand for?
22. 22.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47000 Ω resistor? (a) yellow-violet-red (b) violet-yellow-orange (c) yellow-violet-orange (d) yellow-violet-yellow
26. 26.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-orange-orange (b) red-red-yellow (c) red-red-red (d) red-red-orange
28. 28.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) orange-red-black (b) red-red-black (c) red-red-brown (d) red-orange-black
30. 30.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-brown (b) red-grey-black (c) grey-brown-black (d) brown-grey-black
32. 32.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) green-brown-black (c) blue-brown-black (d) brown-green-black
37. 37.🌈 In the resistor colour code, which number does red stand for?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-black (b) grey-violet-brown (c) violet-grey-brown (d) grey-violet-red
39. 39.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?

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