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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 190 · 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 resistor has the colour bands white, blue, red. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) brown-yellow-black (b) white-yellow-brown (c) white-yellow-black (d) yellow-white-black
  3. 3.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-red (b) violet-red-orange (c) red-violet-orange (d) red-violet-yellow
  8. 8.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  12. 12.🌈 In the resistor colour code, which number does grey stand for?
  13. 13.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  15. 15.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-black (b) violet-brown-brown (c) brown-violet-brown (d) violet-brown-red
  18. 18.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-brown-black (b) brown-brown-brown (c) red-brown-black (d) brown-red-black
  20. 20.🌈 In the resistor colour code, which number does black stand for?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-orange (b) grey-black-red (c) grey-black-yellow (d) white-grey-orange
  25. 25.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) violet-blue-orange (b) blue-violet-orange (c) violet-blue-yellow (d) violet-blue-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) orange-yellow-black (b) yellow-orange-black (c) green-orange-black (d) yellow-orange-brown
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) violet-grey-brown (b) grey-violet-red (c) grey-violet-black (d) grey-violet-brown
  32. 32.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does yellow stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-brown (b) orange-red-red (c) red-black-red (d) red-black-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14 Ω resistor? (a) yellow-brown-black (b) brown-yellow-black (c) brown-yellow-brown (d) red-yellow-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-black (b) blue-grey-brown (c) grey-blue-brown (d) blue-grey-red

Answer key

  1. 9600
  2. white-yellow-black
  3. 450
  4. 7
  5. 1.1
  6. 1100
  7. red-violet-orange
  8. 6.2
  9. 18000
  10. 49
  11. the one nearest an end
  12. 8
  13. 71000
  14. 5 %
  15. 530
  16. 4.8
  17. violet-brown-brown
  18. 8200
  19. brown-brown-black
  20. 0
  21. 1
  22. 2200
  23. 740
  24. grey-black-orange
  25. 3400
  26. 95
  27. 130
  28. 740
  29. violet-blue-orange
  30. yellow-orange-black
  31. grey-violet-brown
  32. 810
  33. 99
  34. 3.5
  35. 3.7
  36. 330
  37. 4
  38. red-black-red
  39. brown-yellow-black
  40. blue-grey-brown

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