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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 861 · 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 violet, yellow, orange. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) white-green-black (b) blue-white-black (c) green-white-brown (d) green-white-black
  3. 3.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-black (b) red-violet-black (c) grey-red-black (d) violet-red-brown
  5. 5.🌈 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
  6. 6.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) orange-green-black (b) orange-green-brown (c) green-orange-black (d) yellow-green-black
  10. 10.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-red (b) orange-black-orange (c) yellow-orange-orange (d) orange-black-yellow
  12. 12.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) brown-blue-red (d) brown-blue-orange
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) white-black-brown (c) white-black-red (d) brown-white-brown
  18. 18.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does blue stand for?
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  24. 24.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  28. 28.🌈 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
  29. 29.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does white stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) orange-blue-yellow (b) blue-orange-orange (c) orange-blue-red (d) orange-blue-orange
  33. 33.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-orange (b) grey-blue-red (c) blue-grey-orange (d) grey-blue-yellow
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-black (b) green-grey-black (c) yellow-grey-brown (d) grey-yellow-black
  38. 38.🌈 In the resistor colour code, which number does black stand for?
  39. 39.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?

Answer key

  1. 74000
  2. green-white-black
  3. 590
  4. violet-red-black
  5. the one nearest an end
  6. 430
  7. 910
  8. 49
  9. orange-green-black
  10. 5
  11. orange-black-orange
  12. 96
  13. 7
  14. 2
  15. 94
  16. brown-blue-red
  17. white-black-brown
  18. 51
  19. 70
  20. 31000
  21. 6
  22. 4
  23. 5 %
  24. 16
  25. 12
  26. 91
  27. 52
  28. blue-blue-brown
  29. 7100
  30. 700
  31. 9
  32. orange-blue-orange
  33. 9600
  34. 860
  35. 220
  36. grey-blue-orange
  37. yellow-grey-black
  38. 0
  39. 99
  40. 20

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