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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 859 · 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.🌈 In the resistor colour code, which number does violet stand for?
  2. 2.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  4. 4.🌈 In the resistor colour code, which number does grey stand for?
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) orange-blue-black (b) red-blue-brown (c) red-blue-black (d) blue-red-black
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-red (b) red-yellow-red (c) yellow-red-brown (d) yellow-red-orange
  8. 8.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) green-red-black (b) yellow-red-black (c) yellow-red-brown (d) red-yellow-black
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) yellow-red-black (b) red-orange-black (c) orange-red-black (d) orange-red-brown
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-brown (b) orange-red-brown (c) red-orange-black (d) red-orange-red
  13. 13.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-brown (b) blue-black-red (c) blue-black-orange (d) violet-blue-red
  15. 15.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-orange (b) blue-green-orange (c) green-black-yellow (d) green-black-red
  19. 19.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47000 Ω resistor? (a) yellow-violet-red (b) violet-yellow-orange (c) yellow-violet-yellow (d) yellow-violet-orange
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-brown (b) red-red-black (c) brown-red-black (d) red-brown-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) grey-white-brown (b) grey-white-black (c) white-white-black (d) white-grey-black
  28. 28.🌈 In the resistor colour code, which number does red stand for?
  29. 29.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does white stand for?
  31. 31.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-red (b) red-orange-orange (c) orange-red-red (d) red-orange-brown
  37. 37.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-orange (b) violet-brown-yellow (c) violet-brown-red (d) brown-violet-orange
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8500 Ω resistor? (a) grey-green-orange (b) grey-green-brown (c) green-grey-red (d) grey-green-red

Answer key

  1. 7
  2. 60000
  3. the one nearest an end
  4. 8
  5. 1
  6. red-blue-black
  7. yellow-red-red
  8. 820
  9. 5 %
  10. yellow-red-black
  11. orange-red-black
  12. red-orange-brown
  13. 200
  14. blue-black-red
  15. 920
  16. 510
  17. 6
  18. green-black-orange
  19. 7000
  20. 34000
  21. yellow-violet-orange
  22. 0
  23. 91
  24. 82000
  25. 900
  26. brown-red-black
  27. grey-white-black
  28. 2
  29. 2.2
  30. 9
  31. 360
  32. 22
  33. 25
  34. 6.3
  35. 3400
  36. red-orange-red
  37. 990
  38. 13
  39. violet-brown-orange
  40. grey-green-red

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