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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 625 · 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, red, black. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) blue-green-brown (b) green-black-red (c) green-black-black (d) green-black-brown
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) green-blue-brown (b) blue-green-red (c) green-blue-red (d) green-blue-orange
  5. 5.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does yellow stand for?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  8. 8.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) green-red-black (b) red-green-brown (c) green-red-red (d) green-red-brown
  10. 10.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) blue-orange-orange (b) orange-blue-red (c) orange-blue-orange (d) orange-blue-yellow
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) yellow-white-red (b) white-yellow-brown (c) white-yellow-orange (d) white-yellow-red
  14. 14.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) green-grey-red (d) green-grey-brown
  16. 16.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does orange stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-yellow (b) violet-orange-orange (c) orange-violet-orange (d) orange-violet-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-brown (b) white-yellow-red (c) yellow-white-brown (d) white-yellow-black
  20. 20.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-black (b) red-brown-brown (c) red-brown-red (d) brown-red-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-red (b) green-yellow-red (c) yellow-green-brown (d) yellow-green-orange
  25. 25.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) violet-orange-brown (b) orange-violet-black (c) grey-orange-black (d) violet-orange-black
  27. 27.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) orange-violet-orange (b) orange-violet-brown (c) violet-orange-red (d) orange-violet-red
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) yellow-blue-black (b) yellow-blue-brown (c) yellow-blue-red (d) blue-yellow-brown
  34. 34.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) blue-brown-orange (b) brown-blue-red (c) brown-blue-orange (d) brown-blue-yellow

Answer key

  1. 62
  2. the one nearest an end
  3. green-black-brown
  4. green-blue-red
  5. 7.2
  6. 4
  7. 5 %
  8. 79000
  9. green-red-brown
  10. 170
  11. 660
  12. orange-blue-orange
  13. white-yellow-red
  14. 94
  15. green-grey-brown
  16. 6900
  17. 3
  18. orange-violet-orange
  19. white-yellow-brown
  20. 2.8
  21. 2.5
  22. 430
  23. red-brown-brown
  24. yellow-green-red
  25. 3900
  26. violet-orange-black
  27. 30
  28. 26
  29. 95
  30. orange-violet-red
  31. 7
  32. 68000
  33. yellow-blue-brown
  34. 70000
  35. 9.6
  36. 510
  37. 2900
  38. 330
  39. 1.8
  40. brown-blue-orange

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