Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 89 · 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 brown, brown, orange. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
4. 4.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 In the resistor colour code, which number does orange stand for?
12. 12.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 In the resistor colour code, which number does violet stand for?
16. 16.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
17. 17.🌈 In the resistor colour code, which number does brown stand for?
18. 18.🌈 In the resistor colour code, which number does green stand for?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) orange-grey-brown (b) grey-orange-brown (c) grey-orange-red (d) grey-orange-black
20. 20.🌈 In the resistor colour code, which number does yellow stand for?
21. 21.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) brown-white-orange (b) brown-white-yellow (c) brown-white-red (d) white-brown-orange
23. 23.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
30. 30.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
31. 31.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-yellow (b) grey-black-orange (c) white-grey-orange (d) grey-black-red
33. 33.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 770 Ω resistor? (a) violet-violet-black (b) violet-violet-red (c) violet-grey-brown (d) violet-violet-brown
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-orange (b) red-white-red (c) red-white-yellow (d) white-red-orange
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) red-violet-orange (b) violet-red-red (c) violet-red-orange (d) violet-red-yellow
37. 37.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-orange (b) violet-red-red (c) red-violet-brown (d) red-violet-red

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