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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 140 · 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 orange stand for?
  2. 2.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 880 Ω resistor? (a) grey-grey-black (b) grey-grey-brown (c) grey-white-brown (d) grey-grey-red
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-orange (c) red-grey-red (d) red-grey-brown
  7. 7.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) red-brown-brown (b) brown-red-red (c) brown-red-black (d) brown-red-brown
  15. 15.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does yellow stand for?
  18. 18.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-brown (c) green-yellow-black (d) yellow-green-black
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) yellow-brown-red (b) brown-yellow-orange (c) brown-yellow-brown (d) brown-yellow-red
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-brown (b) white-green-red (c) green-white-red (d) white-green-orange
  24. 24.🌈 In the resistor colour code, which number does grey stand for?
  25. 25.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-red (b) blue-red-orange (c) red-blue-orange (d) red-blue-yellow
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7900 Ω resistor? (a) white-violet-red (b) violet-white-orange (c) violet-white-red (d) violet-white-brown
  28. 28.🌈 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
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) yellow-red-brown (b) red-yellow-brown (c) red-yellow-red (d) red-yellow-black
  30. 30.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-black (b) violet-orange-brown (c) orange-violet-brown (d) orange-violet-red
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-orange (b) brown-violet-brown (c) brown-violet-red (d) violet-brown-red
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-yellow-black (b) yellow-orange-black (c) orange-orange-black (d) orange-orange-brown
  38. 38.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17000 Ω resistor? (a) brown-violet-orange (b) brown-violet-yellow (c) brown-violet-red (d) violet-brown-orange
  40. 40.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 3
  2. 410
  3. 1
  4. 0
  5. grey-grey-brown
  6. red-grey-red
  7. 78000
  8. 6200
  9. 5 %
  10. 5
  11. 53
  12. 210
  13. 54
  14. brown-red-brown
  15. 68000
  16. 90
  17. 4
  18. 260
  19. 4.2
  20. 980
  21. yellow-green-black
  22. brown-yellow-red
  23. white-green-red
  24. 8
  25. 620
  26. red-blue-orange
  27. violet-white-red
  28. the one nearest an end
  29. red-yellow-brown
  30. 830
  31. 2900
  32. 190
  33. 2
  34. 740
  35. orange-violet-brown
  36. brown-violet-red
  37. orange-orange-black
  38. 240
  39. brown-violet-orange
  40. 28

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