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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 243 · 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) 5 % (c) 0 % (d) 50 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) violet-yellow-orange (b) violet-yellow-red (c) yellow-violet-red (d) violet-yellow-brown
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-black (b) yellow-violet-black (c) violet-orange-black (d) orange-violet-brown
  4. 4.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) orange-blue-brown (b) blue-orange-brown (c) blue-orange-red (d) blue-orange-black
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 In the resistor colour code, which number does violet stand for?
  15. 15.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
  18. 18.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) orange-white-black (b) white-red-black (c) red-white-black (d) red-white-brown
  24. 24.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) orange-violet-orange (b) orange-violet-red (c) orange-violet-brown (d) violet-orange-red
  26. 26.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-red (b) red-brown-black (c) red-brown-brown (d) brown-red-brown
  29. 29.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) orange-red-black (d) red-black-black
  33. 33.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) blue-yellow-brown (b) blue-yellow-red (c) yellow-blue-brown (d) blue-yellow-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-brown (b) violet-blue-red (c) blue-black-orange (d) blue-black-red
  38. 38.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. violet-yellow-red
  3. orange-violet-black
  4. 960
  5. 2
  6. 95
  7. 450
  8. 71
  9. 19
  10. 88
  11. blue-orange-brown
  12. 0
  13. 9
  14. 7
  15. 260
  16. 8
  17. the one nearest an end
  18. 28
  19. 9.2
  20. 20
  21. 1
  22. 220
  23. red-white-black
  24. 14000
  25. orange-violet-red
  26. 32000
  27. 13
  28. red-brown-brown
  29. 580
  30. 2900
  31. 79
  32. red-black-black
  33. 80
  34. 6
  35. 63
  36. blue-yellow-brown
  37. blue-black-red
  38. 1.9
  39. 1.3
  40. 7.3

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