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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 420 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-green-orange (b) green-green-red (c) green-green-yellow (d) green-blue-orange
  2. 2.🌈 In the resistor colour code, which number does orange stand for?
  3. 3.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) orange-grey-orange (b) orange-grey-brown (c) orange-grey-red (d) grey-orange-red
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) violet-grey-brown (c) grey-violet-brown (d) grey-violet-black
  8. 8.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  9. 9.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) yellow-violet-black (b) violet-orange-black (c) orange-violet-brown (d) orange-violet-black
  11. 11.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does violet stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-red (b) yellow-green-brown (c) yellow-green-black (d) green-yellow-brown
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  15. 15.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-orange (b) orange-violet-orange (c) violet-orange-yellow (d) violet-orange-red
  17. 17.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-orange-brown (c) red-red-black (d) red-red-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) blue-white-black (b) green-white-brown (c) white-green-black (d) green-white-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) violet-red-red (b) violet-red-black (c) red-violet-brown (d) violet-red-brown
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63000 Ω resistor? (a) blue-orange-orange (b) orange-blue-orange (c) blue-orange-yellow (d) blue-orange-red
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 In the resistor colour code, which number does yellow stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) red-green-black (b) green-red-brown (c) green-red-black (d) blue-red-black
  30. 30.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-red (b) grey-black-brown (c) grey-black-black (d) white-grey-brown
  32. 32.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-white-black (b) grey-grey-brown (c) grey-grey-black (d) white-grey-black
  37. 37.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. green-green-orange
  2. 3
  3. 4.1
  4. 380
  5. orange-grey-red
  6. 5
  7. grey-violet-brown
  8. the one nearest an end
  9. 190
  10. orange-violet-black
  11. 11
  12. 7
  13. yellow-green-brown
  14. 5 %
  15. 240
  16. violet-orange-orange
  17. 7400
  18. 22000
  19. red-red-brown
  20. green-white-black
  21. violet-red-brown
  22. 2
  23. 490
  24. 4800
  25. 700
  26. blue-orange-orange
  27. 1
  28. 4
  29. green-red-black
  30. 6.1
  31. grey-black-brown
  32. 3
  33. 18
  34. 2.6
  35. 1400
  36. grey-grey-black
  37. 1
  38. 420
  39. 670
  40. 770

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