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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 9 · 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 violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) grey-blue-orange (b) blue-grey-yellow (c) blue-grey-orange (d) blue-grey-red
  4. 4.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands yellow, grey, brown. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  8. 8.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) white-red-red (b) red-white-brown (c) red-white-red (d) red-white-orange
  10. 10.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  12. 12.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does orange stand for?
  15. 15.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 In the resistor colour code, which number does black stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-red (b) brown-yellow-black (c) brown-yellow-brown (d) yellow-brown-brown
  22. 22.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) brown-blue-red (b) brown-blue-black (c) blue-brown-brown (d) brown-blue-brown
  25. 25.🌈 In the resistor colour code, which number does brown stand for?
  26. 26.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-orange (b) green-white-red (c) white-green-red (d) white-green-brown
  29. 29.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-brown (b) grey-violet-black (c) violet-grey-black (d) white-violet-black
  32. 32.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-yellow (b) violet-brown-red (c) brown-violet-orange (d) violet-brown-orange
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) yellow-green-brown (b) green-yellow-red (c) green-yellow-black (d) green-yellow-brown
  35. 35.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-orange (b) grey-grey-red (c) grey-white-red (d) grey-grey-brown
  37. 37.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-yellow (b) brown-green-red (c) green-brown-orange (d) brown-green-orange
  40. 40.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?

Answer key

  1. 7.7
  2. 9
  3. blue-grey-orange
  4. 26
  5. 7900
  6. 480
  7. the one nearest an end
  8. 86000
  9. red-white-red
  10. 93
  11. 5 %
  12. 21
  13. 12
  14. 3
  15. 7.9
  16. 7
  17. 72
  18. 510
  19. 8
  20. 0
  21. brown-yellow-brown
  22. 890
  23. 89
  24. brown-blue-brown
  25. 1
  26. 190
  27. 7.3
  28. white-green-red
  29. 26
  30. 81
  31. grey-violet-black
  32. 32
  33. violet-brown-orange
  34. green-yellow-brown
  35. 25000
  36. grey-grey-red
  37. 120
  38. 310
  39. brown-green-orange
  40. 20000

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