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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 881 · 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 gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-orange (b) orange-violet-red (c) violet-orange-orange (d) orange-violet-yellow
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) green-red-red (b) red-green-red (c) red-green-orange (d) red-green-brown
  7. 7.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-orange (b) green-red-red (c) red-green-orange (d) green-red-yellow
  11. 11.🌈 In the resistor colour code, which number does grey stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) brown-yellow-red (b) yellow-brown-orange (c) yellow-brown-brown (d) yellow-brown-red
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-orange (b) white-grey-red (c) white-grey-yellow (d) grey-white-orange
  14. 14.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  18. 18.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-orange (b) violet-green-brown (c) green-violet-red (d) violet-green-red
  24. 24.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) brown-red-yellow (b) brown-red-orange (c) red-brown-orange (d) brown-red-red
  28. 28.🌈 In the resistor colour code, which number does green stand for?
  29. 29.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-yellow (b) yellow-orange-orange (c) orange-black-orange (d) orange-black-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) grey-yellow-red (b) yellow-grey-orange (c) yellow-grey-red (d) yellow-grey-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) blue-brown-black (c) green-brown-black (d) brown-green-black
  36. 36.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) white-brown-brown (b) brown-white-brown (c) brown-white-black (d) brown-white-red
  40. 40.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?

Answer key

  1. 5 %
  2. orange-violet-orange
  3. 0
  4. 890
  5. 39
  6. red-green-red
  7. 1.1
  8. 86
  9. 520
  10. green-red-orange
  11. 8
  12. yellow-brown-red
  13. white-grey-orange
  14. 71000
  15. 4
  16. 7
  17. the one nearest an end
  18. 720
  19. 6
  20. 1
  21. 74
  22. 3
  23. violet-green-red
  24. 93000
  25. 79000
  26. 2000
  27. brown-red-orange
  28. 5
  29. 7.1
  30. 240
  31. 17
  32. 1400
  33. orange-black-orange
  34. yellow-grey-red
  35. green-brown-black
  36. 570
  37. 95
  38. 25000
  39. brown-white-brown
  40. 3800

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