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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 791 · 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 black stand for?
  2. 2.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-yellow (c) yellow-red-red (d) yellow-red-orange
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-brown (b) violet-grey-orange (c) violet-grey-red (d) grey-violet-red
  6. 6.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-black-black (b) violet-black-black (c) violet-black-brown (d) grey-violet-black
  8. 8.🌈 In the resistor colour code, which number does red stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) green-yellow-red (b) yellow-black-brown (c) yellow-black-orange (d) yellow-black-red
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-yellow (b) violet-black-red (c) violet-black-orange (d) grey-violet-orange
  11. 11.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) grey-yellow-red (b) yellow-grey-orange (c) yellow-grey-brown (d) yellow-grey-red
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-white-black (b) grey-white-black (c) white-grey-black (d) grey-white-brown
  16. 16.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does grey stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-red (b) blue-brown-orange (c) blue-brown-brown (d) brown-blue-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) blue-red-red (b) red-blue-orange (c) red-blue-brown (d) red-blue-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) red-orange-red (c) orange-red-red (d) red-orange-brown
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  23. 23.🌈 In the resistor colour code, which number does brown stand for?
  24. 24.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-red (b) violet-yellow-brown (c) yellow-violet-brown (d) yellow-violet-black
  27. 27.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-black (b) orange-red-brown (c) red-orange-red (d) red-orange-brown
  32. 32.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does violet stand for?
  34. 34.🌈 In the resistor colour code, which number does orange stand for?
  35. 35.🌈 In the resistor colour code, which number does yellow stand for?
  36. 36.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) red-green-orange (b) green-red-orange (c) green-red-yellow (d) green-red-red
  40. 40.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?

Answer key

  1. 0
  2. 32000
  3. 340
  4. yellow-red-orange
  5. violet-grey-red
  6. 8.1
  7. violet-black-black
  8. 2
  9. yellow-black-red
  10. violet-black-orange
  11. 4.6
  12. 54
  13. 5 %
  14. yellow-grey-red
  15. grey-white-black
  16. 89
  17. 8
  18. blue-brown-red
  19. red-blue-red
  20. red-orange-red
  21. 5
  22. the one nearest an end
  23. 1
  24. 270
  25. 7200
  26. yellow-violet-brown
  27. 2.4
  28. 160
  29. 3.3
  30. 740
  31. red-orange-brown
  32. 8300
  33. 7
  34. 3
  35. 4
  36. 3000
  37. 4.9
  38. 210
  39. green-red-orange
  40. 410

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