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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 57 · 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 yellow, black, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 530 Ω resistor? (a) green-orange-brown (b) orange-green-brown (c) green-orange-black (d) green-orange-red
  4. 4.🌈 In the resistor colour code, which number does white stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-brown (b) green-green-black (c) yellow-green-black (d) green-yellow-black
  6. 6.🌈 In the resistor colour code, which number does orange stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-red (b) red-brown-orange (c) brown-red-orange (d) red-brown-yellow
  8. 8.🌈 In the resistor colour code, which number does red stand for?
  9. 9.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does black stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) violet-orange-black (b) yellow-violet-black (c) orange-violet-brown (d) orange-violet-black
  12. 12.🌈 In the resistor colour code, which number does violet stand for?
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  14. 14.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  15. 15.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) blue-grey-brown (b) grey-blue-black (c) grey-blue-red (d) grey-blue-brown
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) orange-white-black (c) white-orange-black (d) white-orange-brown
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) green-grey-brown (b) grey-green-brown (c) grey-green-red (d) grey-green-black
  27. 27.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) yellow-yellow-black (c) green-yellow-black (d) yellow-green-black
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) orange-yellow-orange (b) yellow-orange-yellow (c) yellow-orange-orange (d) yellow-orange-red
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-red (b) blue-black-black (c) violet-blue-brown (d) blue-black-brown
  37. 37.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) grey-red-orange (b) red-grey-yellow (c) red-grey-orange (d) red-grey-red
  40. 40.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?

Answer key

  1. 4000
  2. 3.4
  3. green-orange-brown
  4. 9
  5. yellow-green-black
  6. 3
  7. red-brown-orange
  8. 2
  9. 3.2
  10. 0
  11. orange-violet-black
  12. 7
  13. 5 %
  14. 6500
  15. the one nearest an end
  16. 6
  17. 4.7
  18. 20
  19. 85
  20. 30
  21. 4
  22. 39
  23. grey-blue-brown
  24. 5
  25. white-orange-black
  26. grey-green-brown
  27. 1.4
  28. 74000
  29. 15
  30. 1800
  31. yellow-yellow-black
  32. 8
  33. 52
  34. 5300
  35. yellow-orange-orange
  36. blue-black-brown
  37. 5800
  38. 18000
  39. red-grey-orange
  40. 970

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