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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 661 · 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 white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) orange-yellow-brown (b) orange-yellow-red (c) orange-yellow-black (d) yellow-orange-brown
  4. 4.🌈 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
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-red (b) red-red-orange (c) red-red-brown (d) red-orange-red
  6. 6.🌈 In the resistor colour code, which number does brown 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 green, blue, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) violet-red-black (b) orange-violet-black (c) red-violet-brown (d) red-violet-black
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-black (b) yellow-brown-brown (c) yellow-brown-red (d) brown-yellow-brown
  19. 19.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-brown (b) brown-red-brown (c) brown-brown-black (d) brown-brown-red
  21. 21.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does blue stand for?
  23. 23.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) grey-yellow-brown (b) white-yellow-black (c) grey-yellow-black (d) yellow-grey-black
  28. 28.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-yellow (b) red-grey-red (c) grey-red-orange (d) red-grey-orange
  30. 30.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does black stand for?
  33. 33.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-yellow (b) yellow-yellow-orange (c) yellow-green-orange (d) yellow-yellow-red
  36. 36.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) violet-grey-red (b) violet-grey-black (c) grey-violet-brown (d) violet-grey-brown
  38. 38.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-black (c) yellow-orange-black (d) green-orange-black

Answer key

  1. 9.4
  2. 44
  3. orange-yellow-brown
  4. the one nearest an end
  5. red-red-red
  6. 1
  7. 5 %
  8. 560
  9. 14
  10. 260
  11. 64
  12. 99
  13. 3
  14. 7200
  15. 59000
  16. red-violet-black
  17. 7
  18. yellow-brown-brown
  19. 7900
  20. brown-brown-brown
  21. 73
  22. 6
  23. 34
  24. 8.8
  25. 910
  26. 200
  27. grey-yellow-black
  28. 6.8
  29. red-grey-orange
  30. 15
  31. 490
  32. 0
  33. 56000
  34. 6.6
  35. yellow-yellow-orange
  36. 22
  37. violet-grey-brown
  38. 9400
  39. 93000
  40. yellow-orange-black

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