Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 888 · 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 gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
2. 2.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
6. 6.🌈 In the resistor colour code, which number does blue stand for?
7. 7.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-black (b) red-red-red (c) red-red-brown (d) red-orange-brown
9. 9.🌈 In the resistor colour code, which number does green stand for?
10. 10.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
12. 12.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-red (b) brown-white-red (c) white-black-brown (d) white-black-orange
16. 16.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-yellow (b) green-blue-orange (c) green-blue-red (d) blue-green-orange
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) orange-grey-orange (b) orange-grey-brown (c) orange-grey-red (d) grey-orange-red
20. 20.🌈 In the resistor colour code, which number does white stand for?
21. 21.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8000 Ω resistor? (a) grey-black-orange (b) grey-black-red (c) grey-black-brown (d) white-grey-red
25. 25.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-brown (c) red-black-black (d) orange-black-black
27. 27.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47000 Ω resistor? (a) violet-yellow-orange (b) yellow-violet-yellow (c) yellow-violet-red (d) yellow-violet-orange
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-red (b) brown-yellow-black (c) brown-yellow-brown (d) yellow-brown-brown
30. 30.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
32. 32.🌈 In the resistor colour code, which number does orange stand for?
33. 33.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-orange (b) white-white-brown (c) white-black-red (d) white-white-red
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-orange (b) violet-brown-red (c) violet-brown-yellow (d) brown-violet-orange
36. 36.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands orange, white, orange. 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.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?

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