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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 50 · 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 550 Ω resistor? (a) green-green-brown (b) green-green-black (c) green-green-red (d) green-blue-brown
  2. 2.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) white-orange-orange (b) orange-white-yellow (c) orange-white-red (d) orange-white-orange
  4. 4.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) green-violet-brown (b) green-violet-black (c) blue-violet-black (d) violet-green-black
  7. 7.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-blue-brown (b) blue-blue-red (c) blue-violet-brown (d) blue-blue-black
  10. 10.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) orange-violet-brown (b) violet-orange-red (c) violet-orange-black (d) violet-orange-brown
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) green-brown-red (b) brown-green-brown (c) brown-green-orange (d) brown-green-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) green-red-black (c) orange-green-black (d) red-green-brown
  18. 18.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) brown-yellow-orange (b) yellow-brown-yellow (c) yellow-brown-orange (d) yellow-brown-red
  23. 23.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does red stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-grey-red (b) grey-white-orange (c) grey-grey-orange (d) grey-grey-yellow
  27. 27.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does brown stand for?
  32. 32.🌈 In the resistor colour code, which number does green stand for?
  33. 33.🌈 In the resistor colour code, which number does yellow stand for?
  34. 34.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-yellow (b) orange-violet-orange (c) violet-orange-orange (d) violet-orange-red
  38. 38.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?

Answer key

  1. green-green-brown
  2. 340
  3. orange-white-orange
  4. 990
  5. 5 %
  6. green-violet-black
  7. 8.5
  8. the one nearest an end
  9. blue-blue-brown
  10. 24
  11. 3.8
  12. 3
  13. 9.7
  14. 5500
  15. violet-orange-brown
  16. brown-green-red
  17. red-green-black
  18. 950
  19. 43
  20. 40000
  21. 37
  22. yellow-brown-orange
  23. 400
  24. 10
  25. 2
  26. grey-grey-orange
  27. 2.2
  28. 68000
  29. 84
  30. 970
  31. 1
  32. 5
  33. 4
  34. 9.5
  35. 700
  36. 630
  37. violet-orange-orange
  38. 20000
  39. 930
  40. 66

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