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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 17 · 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.🌈 In the resistor colour code, which number does red stand for?
  2. 2.🌈 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
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) violet-brown-brown (c) violet-brown-orange (d) brown-violet-red
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) red-yellow-orange (b) yellow-red-red (c) red-yellow-brown (d) red-yellow-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) grey-blue-black (b) blue-grey-black (c) violet-grey-black (d) blue-grey-brown
  12. 12.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) white-orange-brown (b) brown-orange-black (c) white-orange-black (d) orange-white-black
  14. 14.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) orange-violet-orange (b) violet-orange-yellow (c) violet-orange-red (d) violet-orange-orange
  17. 17.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-brown (b) red-green-red (c) green-red-orange (d) green-red-red
  19. 19.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) red-green-black (b) brown-green-brown (c) brown-green-black (d) green-brown-black
  21. 21.🌈 In the resistor colour code, which number does white stand for?
  22. 22.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-orange (b) grey-violet-red (c) violet-grey-brown (d) violet-grey-red
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-red (b) green-grey-brown (c) green-grey-black (d) grey-green-brown
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-yellow (b) grey-blue-red (c) blue-grey-orange (d) grey-blue-orange
  26. 26.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) brown-blue-black (b) violet-brown-black (c) blue-brown-black (d) blue-brown-brown
  29. 29.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does black stand for?
  32. 32.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-yellow-brown (b) orange-orange-black (c) orange-orange-red (d) orange-orange-brown
  35. 35.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?

Answer key

  1. 2
  2. the one nearest an end
  3. 5 %
  4. 3
  5. 620
  6. violet-brown-red
  7. 5
  8. 22
  9. 8
  10. red-yellow-red
  11. blue-grey-black
  12. 360
  13. white-orange-black
  14. 570
  15. 1.5
  16. violet-orange-orange
  17. 22
  18. green-red-red
  19. 60000
  20. brown-green-black
  21. 9
  22. 42
  23. violet-grey-red
  24. green-grey-brown
  25. grey-blue-orange
  26. 10
  27. 15000
  28. blue-brown-black
  29. 51000
  30. 120
  31. 0
  32. 2.1
  33. 2.4
  34. orange-orange-brown
  35. 740
  36. 9400
  37. 78
  38. 4.6
  39. 810
  40. 24000

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