Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 727 · 40 questions

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.

1. 1.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) violet-blue-black (b) blue-violet-black (c) violet-blue-brown (d) grey-blue-black
3. 3.🌈 In the resistor colour code, which number does green stand for?
4. 4.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-red (b) red-violet-orange (c) violet-red-yellow (d) violet-red-orange
8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
9. 9.🌈 In the resistor colour code, which number does orange stand for?
10. 10.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-violet-black (b) blue-blue-brown (c) violet-blue-black (d) blue-blue-black
13. 13.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) yellow-green-black (b) green-orange-black (c) orange-green-brown (d) orange-green-black
15. 15.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 In the resistor colour code, which number does red stand for?
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-brown (c) orange-black-black (d) red-black-black
18. 18.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) yellow-brown-black (c) brown-orange-black (d) orange-brown-black
25. 25.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) yellow-white-black (b) white-orange-black (c) orange-white-brown (d) orange-white-black
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) brown-red-red (b) red-brown-red (c) red-brown-brown (d) red-brown-orange
30. 30.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 In the resistor colour code, which number does blue stand for?
32. 32.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands blue, orange, orange. 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 93000 Ω resistor? (a) white-orange-yellow (b) orange-white-orange (c) white-orange-red (d) white-orange-orange
39. 39.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
40. 40.🌈 In the resistor colour code, which number does black stand for?

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