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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 974 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) white-green-black (b) green-white-brown (c) white-green-brown (d) white-green-red
  4. 4.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-white-orange (b) grey-grey-yellow (c) grey-grey-red (d) grey-grey-orange
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-orange-black (b) orange-red-black (c) red-orange-black (d) red-orange-brown
  13. 13.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does grey stand for?
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) blue-violet-brown (c) violet-blue-red (d) violet-blue-brown
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) orange-red-brown (c) red-black-black (d) red-black-brown
  22. 22.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-orange (b) green-red-red (c) red-green-orange (d) green-red-yellow
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) brown-red-brown (c) red-brown-brown (d) brown-red-red
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) yellow-white-black (b) orange-white-black (c) white-orange-black (d) orange-white-brown
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) white-violet-brown (b) white-violet-black (c) white-violet-red (d) violet-white-brown
  27. 27.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does orange stand for?
  29. 29.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60 Ω resistor? (a) violet-blue-black (b) violet-black-black (c) blue-black-brown (d) blue-black-black
  32. 32.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) grey-violet-black (c) violet-grey-brown (d) grey-violet-brown
  35. 35.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-orange (b) yellow-yellow-red (c) yellow-yellow-yellow (d) yellow-green-orange
  39. 39.🌈 In the resistor colour code, which number does white stand for?
  40. 40.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 7500
  3. white-green-brown
  4. 9.4
  5. 980
  6. 5 %
  7. grey-grey-orange
  8. 1
  9. 62
  10. 5
  11. 89
  12. red-orange-black
  13. 55000
  14. 41
  15. 8.3
  16. 2
  17. 380
  18. 8
  19. 0
  20. violet-blue-brown
  21. red-black-brown
  22. 830
  23. green-red-orange
  24. brown-red-brown
  25. orange-white-black
  26. white-violet-brown
  27. 6.9
  28. 3
  29. 34000
  30. 4
  31. blue-black-black
  32. 1000
  33. 31
  34. grey-violet-brown
  35. 2900
  36. 61000
  37. 14
  38. yellow-yellow-orange
  39. 9
  40. 38000

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