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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 518 · 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 gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-orange (b) yellow-orange-orange (c) orange-black-red (d) orange-black-yellow
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) yellow-orange-red (b) orange-yellow-red (c) orange-yellow-orange (d) orange-yellow-brown
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-brown (b) yellow-black-black (c) yellow-orange-black (d) orange-black-black
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8300 Ω resistor? (a) grey-orange-red (b) orange-grey-red (c) grey-orange-brown (d) grey-orange-orange
  6. 6.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does yellow stand for?
  9. 9.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-red (b) brown-blue-orange (c) blue-brown-orange (d) blue-brown-yellow
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) violet-green-black (b) grey-green-black (c) violet-green-brown (d) green-violet-black
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) violet-brown-brown (c) brown-violet-red (d) violet-brown-orange
  25. 25.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-red (b) yellow-white-yellow (c) white-yellow-orange (d) yellow-white-orange
  27. 27.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) brown-violet-red (c) violet-brown-brown (d) brown-violet-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) orange-violet-black (b) violet-orange-black (c) violet-orange-brown (d) grey-orange-black
  31. 31.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) green-orange-orange (b) green-orange-brown (c) orange-green-red (d) green-orange-red
  33. 33.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-black-black (b) violet-black-brown (c) grey-violet-black (d) violet-black-black
  36. 36.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?

Answer key

  1. 5 %
  2. orange-black-orange
  3. orange-yellow-red
  4. orange-black-black
  5. grey-orange-red
  6. 2.8
  7. 5.6
  8. 4
  9. 770
  10. 7
  11. the one nearest an end
  12. blue-brown-orange
  13. violet-green-black
  14. 2
  15. 0
  16. 2300
  17. 58
  18. 4.3
  19. 72
  20. 1
  21. 120
  22. 5
  23. 150
  24. violet-brown-red
  25. 20000
  26. yellow-white-orange
  27. 3.4
  28. 17000
  29. brown-violet-brown
  30. violet-orange-black
  31. 2500
  32. green-orange-red
  33. 43
  34. 110
  35. violet-black-black
  36. 19
  37. 4700
  38. 4300
  39. 69
  40. 20

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