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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 526 · 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.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  10. 10.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does green stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-black (b) violet-grey-brown (c) grey-violet-red (d) grey-violet-brown
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) blue-yellow-red (b) blue-yellow-orange (c) yellow-blue-orange (d) blue-yellow-yellow
  14. 14.🌈 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
  15. 15.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does black stand for?
  17. 17.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) blue-yellow-brown (b) yellow-blue-red (c) yellow-blue-brown (d) yellow-blue-black
  19. 19.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does violet stand for?
  22. 22.🌈 In the resistor colour code, which number does grey stand for?
  23. 23.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) green-brown-brown (b) brown-green-red (c) brown-green-brown (d) brown-green-black
  25. 25.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-orange (b) white-white-brown (c) white-black-red (d) white-white-red
  27. 27.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) green-orange-brown (b) orange-green-black (c) orange-green-brown (d) orange-green-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) yellow-violet-red (b) violet-yellow-brown (c) violet-yellow-red (d) violet-yellow-orange
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-red-black (c) red-orange-brown (d) red-red-brown
  32. 32.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-orange (b) green-orange-red (c) orange-green-brown (d) orange-green-red
  37. 37.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does orange stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-black (b) grey-green-brown (c) green-grey-brown (d) green-grey-red
  40. 40.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?

Answer key

  1. 91000
  2. 2
  3. 99000
  4. 640
  5. 6000
  6. 56
  7. 8.2
  8. 20
  9. 5 %
  10. 21
  11. 5
  12. grey-violet-brown
  13. blue-yellow-orange
  14. the one nearest an end
  15. 16000
  16. 0
  17. 52
  18. yellow-blue-brown
  19. 7400
  20. 790
  21. 7
  22. 8
  23. 34
  24. brown-green-brown
  25. 7.2
  26. white-white-red
  27. 32
  28. 70000
  29. orange-green-brown
  30. violet-yellow-red
  31. red-red-brown
  32. 5900
  33. 33
  34. 530
  35. 7000
  36. orange-green-red
  37. 140
  38. 3
  39. green-grey-brown
  40. 8400

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