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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 51 · 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 orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-black (b) green-brown-brown (c) brown-green-red (d) brown-green-brown
  3. 3.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does brown stand for?
  5. 5.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-orange (b) orange-violet-yellow (c) orange-violet-red (d) violet-orange-orange
  8. 8.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) brown-red-brown (b) red-brown-red (c) red-brown-black (d) red-brown-brown
  11. 11.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-brown (b) grey-brown-red (c) brown-grey-orange (d) brown-grey-red
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does black stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-brown (b) yellow-brown-red (c) brown-yellow-orange (d) brown-yellow-red
  19. 19.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-black (b) grey-blue-brown (c) blue-grey-brown (d) blue-grey-red
  21. 21.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-violet-brown (b) blue-blue-black (c) blue-blue-brown (d) blue-blue-red
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) blue-grey-black (b) green-grey-black (c) grey-green-black (d) green-grey-brown
  29. 29.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does white stand for?
  31. 31.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-orange-red (b) red-red-red (c) red-red-orange (d) red-red-brown
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) violet-grey-brown (b) grey-grey-black (c) violet-grey-black (d) grey-violet-black
  34. 34.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does blue stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6700 Ω resistor? (a) blue-violet-orange (b) blue-violet-red (c) violet-blue-red (d) blue-violet-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) green-grey-orange (b) green-grey-red (c) green-grey-yellow (d) grey-green-orange
  39. 39.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 36
  2. brown-green-brown
  3. 83
  4. 1
  5. 9.6
  6. the one nearest an end
  7. orange-violet-orange
  8. 5.1
  9. 5000
  10. red-brown-brown
  11. 950
  12. 11
  13. brown-grey-red
  14. 2
  15. 140
  16. 200
  17. 0
  18. brown-yellow-red
  19. 6.4
  20. blue-grey-brown
  21. 7
  22. 830
  23. 2.5
  24. blue-blue-brown
  25. 7
  26. 7.5
  27. 44000
  28. green-grey-black
  29. 220
  30. 9
  31. 5 %
  32. red-red-red
  33. violet-grey-black
  34. 63
  35. 64
  36. 6
  37. blue-violet-red
  38. green-grey-orange
  39. 8.1
  40. 6.6

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