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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 247 · 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 red, white, red. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 770 Ω resistor? (a) violet-violet-black (b) violet-grey-brown (c) violet-violet-brown (d) violet-violet-red
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) red-violet-black (d) red-violet-brown
  6. 6.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 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
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) orange-yellow-black (c) orange-yellow-brown (d) yellow-yellow-black
  11. 11.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does white stand for?
  15. 15.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-brown (b) red-brown-red (c) red-brown-orange (d) brown-red-red
  17. 17.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does black stand for?
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-black (b) red-grey-brown (c) grey-red-black (d) orange-grey-black
  22. 22.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  23. 23.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does blue stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 380 Ω resistor? (a) orange-grey-red (b) orange-grey-brown (c) orange-grey-black (d) grey-orange-brown
  26. 26.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-red (b) red-yellow-black (c) yellow-red-brown (d) red-yellow-brown
  37. 37.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does grey stand for?
  40. 40.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?

Answer key

  1. 2900
  2. violet-violet-brown
  3. 7
  4. 35
  5. red-violet-brown
  6. 26
  7. 540
  8. 25
  9. the one nearest an end
  10. orange-yellow-black
  11. 280
  12. 11
  13. 7.5
  14. 9
  15. 55
  16. red-brown-red
  17. 360
  18. 0
  19. 1
  20. 39
  21. red-grey-black
  22. 5 %
  23. 3
  24. 6
  25. orange-grey-brown
  26. 63
  27. 960
  28. 100
  29. 4600
  30. 890
  31. 440
  32. 3
  33. 69
  34. 880
  35. 380
  36. red-yellow-brown
  37. 3100
  38. 20
  39. 8
  40. 470

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