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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 964 · 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.🌈 In the resistor colour code, which number does blue stand for?
  2. 2.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) red-green-orange (c) green-red-red (d) red-green-brown
  4. 4.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  8. 8.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-yellow (b) white-grey-orange (c) grey-black-red (d) grey-black-orange
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) brown-white-black (c) white-brown-black (d) red-white-black
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 In the resistor colour code, which number does red stand for?
  21. 21.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) violet-blue-yellow (b) violet-blue-red (c) blue-violet-orange (d) violet-blue-orange
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-grey-black (b) white-grey-black (c) grey-grey-brown (d) grey-white-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-brown (b) green-yellow-red (c) yellow-green-red (d) green-yellow-orange
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) orange-violet-black (b) red-violet-black (c) violet-red-black (d) red-violet-brown
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-black (b) blue-violet-brown (c) blue-violet-red (d) violet-blue-brown
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9700 Ω resistor? (a) white-violet-red (b) white-violet-orange (c) violet-white-red (d) white-violet-brown
  36. 36.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) orange-black-black (c) orange-black-brown (d) yellow-orange-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-red (b) grey-red-black (c) grey-red-brown (d) red-grey-brown
  40. 40.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 6
  2. 6800
  3. red-green-red
  4. 35000
  5. 10
  6. 360
  7. the one nearest an end
  8. 6
  9. 9
  10. grey-black-orange
  11. 7
  12. 510
  13. 1000
  14. 500
  15. 21
  16. 6100
  17. brown-white-black
  18. 5 %
  19. 1
  20. 2
  21. 910
  22. violet-blue-orange
  23. grey-grey-black
  24. green-yellow-red
  25. red-violet-black
  26. 0
  27. 620
  28. 2000
  29. blue-violet-brown
  30. 4
  31. 15
  32. 710
  33. 890
  34. 1100
  35. white-violet-red
  36. 26
  37. 10
  38. orange-black-black
  39. grey-red-brown
  40. 45

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