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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 73 · 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 resistor has the colour bands blue, white, orange. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) white-red-brown (c) red-white-red (d) red-white-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-red (b) orange-red-yellow (c) orange-red-orange (d) red-orange-orange
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-yellow (b) green-black-orange (c) blue-green-orange (d) green-black-red
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-brown (b) red-orange-black (c) red-orange-red (d) orange-red-brown
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-brown (b) blue-red-red (c) blue-red-black (d) red-blue-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) white-brown-brown (b) white-brown-black (c) brown-brown-black (d) brown-white-black
  11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  12. 12.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-orange (b) grey-violet-brown (c) grey-violet-red (d) violet-grey-red
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-orange (b) red-blue-red (c) blue-red-brown (d) blue-red-red
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-black-black (b) violet-black-brown (c) violet-black-black (d) grey-violet-black
  24. 24.🌈 In the resistor colour code, which number does black stand for?
  25. 25.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) violet-grey-black (b) blue-grey-brown (c) grey-blue-black (d) blue-grey-black
  31. 31.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67000 Ω resistor? (a) violet-blue-orange (b) blue-violet-red (c) blue-violet-yellow (d) blue-violet-orange
  37. 37.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does orange stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-brown (b) brown-orange-red (c) orange-brown-brown (d) brown-orange-black
  40. 40.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?

Answer key

  1. 69000
  2. 2
  3. 1.1
  4. 5 %
  5. red-white-brown
  6. orange-red-orange
  7. green-black-orange
  8. red-orange-brown
  9. blue-red-brown
  10. white-brown-black
  11. the one nearest an end
  12. 95
  13. 6000
  14. 6
  15. 400
  16. 88
  17. 4700
  18. grey-violet-red
  19. 5
  20. blue-red-red
  21. 4
  22. 11
  23. violet-black-black
  24. 0
  25. 5.1
  26. 58
  27. 36
  28. 2
  29. 12
  30. blue-grey-black
  31. 7900
  32. 2400
  33. 41
  34. 7.2
  35. 960
  36. blue-violet-orange
  37. 46000
  38. 3
  39. brown-orange-brown
  40. 98000

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