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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 637 · 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.

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  1. 1.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) red-white-brown (b) white-red-red (c) red-white-red (d) red-white-orange
  5. 5.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  8. 8.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-black (b) blue-grey-brown (c) grey-blue-black (d) violet-grey-black
  10. 10.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-yellow (b) white-brown-orange (c) brown-white-orange (d) white-brown-red
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-brown (b) brown-black-black (c) brown-white-black (d) white-black-black
  14. 14.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) red-violet-black (b) red-violet-brown (c) orange-violet-black (d) violet-red-black
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-brown (b) red-orange-orange (c) orange-red-red (d) red-orange-red
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  18. 18.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) brown-white-red (b) white-black-orange (c) white-black-brown (d) white-black-red
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) white-brown-brown (b) brown-white-brown (c) white-brown-red (d) white-brown-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-yellow (b) grey-blue-orange (c) grey-blue-red (d) blue-grey-orange
  24. 24.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 In the resistor colour code, which number does white stand for?
  27. 27.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-red-brown (b) brown-brown-black (c) brown-brown-brown (d) brown-brown-red
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does red stand for?
  34. 34.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-red-brown (b) red-red-black (c) red-orange-black (d) orange-red-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) violet-blue-red (c) violet-blue-brown (d) blue-violet-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) green-yellow-red (b) yellow-green-red (c) yellow-green-orange (d) yellow-green-brown
  39. 39.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?

Answer key

  1. 610
  2. 53
  3. 0
  4. red-white-red
  5. 520
  6. 58
  7. the one nearest an end
  8. 500
  9. blue-grey-black
  10. 84000
  11. 5700
  12. white-brown-orange
  13. white-black-black
  14. 3.4
  15. red-violet-black
  16. red-orange-red
  17. 5 %
  18. 9.5
  19. white-black-red
  20. 3
  21. 210
  22. white-brown-brown
  23. grey-blue-orange
  24. 33
  25. 7
  26. 9
  27. 7.8
  28. 64000
  29. brown-brown-brown
  30. 4
  31. 2.1
  32. 9500
  33. 2
  34. 71
  35. 85
  36. red-red-black
  37. violet-blue-brown
  38. yellow-green-red
  39. 74
  40. 92

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