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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 185 · 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 grey, red, orange. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  3. 3.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-red (b) grey-violet-red (c) violet-black-orange (d) violet-black-brown
  8. 8.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74000 Ω resistor? (a) yellow-violet-orange (b) violet-yellow-yellow (c) violet-yellow-orange (d) violet-yellow-red
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) yellow-orange-black (b) orange-orange-black (c) orange-yellow-black (d) orange-orange-brown
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does brown stand for?
  14. 14.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-brown (b) grey-brown-red (c) brown-grey-red (d) brown-grey-orange
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) red-grey-black (b) grey-red-black (c) grey-red-brown (d) white-red-black
  19. 19.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) brown-red-red (b) red-brown-orange (c) red-brown-brown (d) red-brown-red
  23. 23.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-red (b) yellow-grey-brown (c) yellow-grey-black (d) grey-yellow-brown
  29. 29.🌈 In the resistor colour code, which number does grey stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) green-grey-black (b) grey-yellow-black (c) yellow-grey-black (d) yellow-grey-brown
  31. 31.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) yellow-grey-red (b) grey-yellow-brown (c) grey-yellow-red (d) grey-yellow-orange
  35. 35.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) red-brown-orange (b) brown-red-orange (c) brown-red-yellow (d) brown-red-red
  38. 38.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does violet stand for?

Answer key

  1. 82000
  2. the one nearest an end
  3. 17000
  4. 10
  5. 2100
  6. 6
  7. violet-black-red
  8. 39000
  9. violet-yellow-orange
  10. orange-orange-black
  11. 0
  12. 2.7
  13. 1
  14. 1.4
  15. 3
  16. brown-grey-red
  17. 5 %
  18. grey-red-black
  19. 290
  20. 38
  21. 22
  22. red-brown-red
  23. 12
  24. 14000
  25. 940
  26. 63000
  27. 9.2
  28. yellow-grey-brown
  29. 8
  30. yellow-grey-black
  31. 720
  32. 82
  33. 180
  34. grey-yellow-red
  35. 370
  36. 980
  37. brown-red-orange
  38. 29
  39. 540
  40. 7

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