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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 569 · 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.🌈 In the resistor colour code, which number does black stand for?
  2. 2.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) white-orange-orange (b) orange-white-yellow (c) orange-white-red (d) orange-white-orange
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-red (b) grey-white-orange (c) grey-white-yellow (d) white-grey-orange
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) orange-white-brown (b) orange-white-black (c) white-orange-black (d) yellow-white-black
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) blue-grey-brown (b) grey-blue-black (c) grey-blue-brown (d) grey-blue-red
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-black (b) red-brown-brown (c) brown-red-brown (d) red-brown-red
  14. 14.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) white-brown-black (c) red-white-black (d) brown-white-black
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) orange-black-black (c) red-black-black (d) red-black-brown
  18. 18.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  19. 19.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  20. 20.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) brown-green-black (b) green-brown-black (c) red-green-black (d) brown-green-brown
  26. 26.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does white stand for?
  28. 28.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) violet-grey-brown (b) grey-violet-brown (c) grey-violet-black (d) grey-violet-red
  30. 30.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 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
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) red-white-brown (c) red-white-black (d) white-red-brown
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-brown (b) brown-red-black (c) red-red-black (d) red-brown-black
  38. 38.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?

Answer key

  1. 0
  2. 3.6
  3. orange-white-orange
  4. 3
  5. 1
  6. the one nearest an end
  7. grey-white-orange
  8. orange-white-black
  9. grey-blue-brown
  10. 2
  11. 2600
  12. 940
  13. red-brown-brown
  14. 280
  15. brown-white-black
  16. 8
  17. red-black-black
  18. 81
  19. 5 %
  20. 73000
  21. 31000
  22. 34000
  23. 8900
  24. 110
  25. brown-green-black
  26. 57
  27. 9
  28. 4100
  29. grey-violet-brown
  30. 97
  31. 2300
  32. 15
  33. 19
  34. 7.6
  35. red-red-orange
  36. red-white-brown
  37. brown-red-black
  38. 9.7
  39. 9200
  40. 3700

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