Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 529 · 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.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) white-brown-black (b) red-white-black (c) brown-white-brown (d) brown-white-black
3. 3.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
5. 5.🌈 In the resistor colour code, which number does violet stand for?
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) white-orange-orange (b) orange-white-red (c) orange-white-orange (d) orange-white-yellow
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) grey-red-yellow (b) grey-red-red (c) red-grey-orange (d) grey-red-orange
8. 8.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) orange-grey-orange (b) grey-orange-red (c) orange-grey-red (d) orange-grey-brown
10. 10.🌈 In the resistor colour code, which number does brown stand for?
11. 11.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) white-yellow-brown (b) yellow-white-red (c) white-yellow-red (d) white-yellow-orange
19. 19.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) grey-violet-orange (b) violet-grey-red (c) violet-grey-orange (d) violet-grey-yellow
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-black (b) white-yellow-brown (c) yellow-white-brown (d) white-yellow-red
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) red-blue-brown (b) blue-red-red (c) red-blue-orange (d) red-blue-red
23. 23.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7600 Ω resistor? (a) violet-blue-red (b) blue-violet-red (c) violet-blue-orange (d) violet-blue-brown
25. 25.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) green-blue-black (b) blue-green-black (c) blue-blue-black (d) green-blue-brown
28. 28.🌈 In the resistor colour code, which number does blue stand for?
29. 29.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) green-violet-black (b) grey-green-black (c) violet-green-brown (d) violet-green-black
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-red (b) yellow-brown-orange (c) brown-yellow-orange (d) yellow-brown-yellow
34. 34.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) blue-grey-red (b) grey-blue-brown (c) grey-blue-orange (d) grey-blue-red
36. 36.🌈 In the resistor colour code, which number does orange stand for?
37. 37.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-black (b) red-brown-black (c) red-red-black (d) brown-red-brown
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-orange (b) brown-grey-red (c) grey-brown-orange (d) brown-grey-yellow
40. 40.🌈 In the resistor colour code, which number does grey stand for?

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