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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 576 · 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 brown, grey, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) yellow-white-brown (b) white-yellow-black (c) white-yellow-red (d) white-yellow-brown
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) orange-black-orange (c) yellow-orange-red (d) orange-black-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) yellow-brown-red (d) yellow-brown-orange
  7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  9. 9.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does blue stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-orange (b) yellow-white-red (c) yellow-white-yellow (d) white-yellow-orange
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) brown-red-red (b) red-brown-brown (c) red-brown-orange (d) red-brown-red
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does white stand for?
  16. 16.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8000 Ω resistor? (a) white-grey-red (b) grey-black-orange (c) grey-black-red (d) grey-black-brown
  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 73 Ω resistor? (a) violet-orange-brown (b) orange-violet-black (c) violet-orange-black (d) grey-orange-black
  22. 22.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does red stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) white-yellow-red (b) white-yellow-brown (c) yellow-white-red (d) white-yellow-orange
  26. 26.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does brown stand for?
  30. 30.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-red (b) brown-yellow-orange (c) yellow-brown-red (d) brown-yellow-brown
  33. 33.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) violet-red-brown (c) red-violet-black (d) red-violet-red
  35. 35.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) yellow-white-black (b) white-orange-black (c) orange-white-brown (d) orange-white-black

Answer key

  1. 18000
  2. 9.8
  3. 280
  4. white-yellow-brown
  5. orange-black-red
  6. yellow-brown-red
  7. the one nearest an end
  8. 5 %
  9. 1.5
  10. 6
  11. yellow-white-orange
  12. red-brown-red
  13. 7
  14. 4.2
  15. 9
  16. 17
  17. 40
  18. grey-black-red
  19. 8
  20. 0
  21. violet-orange-black
  22. 39
  23. 650
  24. 2
  25. white-yellow-red
  26. 30
  27. 84
  28. 9.7
  29. 1
  30. 33
  31. 1400
  32. brown-yellow-red
  33. 8900
  34. red-violet-brown
  35. 39000
  36. 24
  37. 96000
  38. 4.8
  39. 510
  40. orange-white-black

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