Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 280 · 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 brown, blue, black. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) green-orange-black (b) orange-yellow-black (c) yellow-orange-brown (d) yellow-orange-black
6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
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 320 Ω resistor? (a) orange-red-black (b) orange-red-brown (c) red-orange-brown (d) orange-red-red
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-brown (b) yellow-violet-red (c) violet-yellow-brown (d) yellow-violet-black
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) yellow-orange-red (b) orange-yellow-brown (c) orange-yellow-red (d) orange-yellow-orange
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14 Ω resistor? (a) red-yellow-black (b) yellow-brown-black (c) brown-yellow-brown (d) brown-yellow-black
12. 12.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) orange-green-brown (b) green-orange-black (c) yellow-green-black (d) orange-green-black
16. 16.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) green-white-brown (b) blue-white-black (c) green-white-black (d) white-green-black
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) blue-grey-yellow (b) grey-blue-orange (c) blue-grey-red (d) blue-grey-orange
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) red-brown-black (b) brown-brown-brown (c) brown-red-black (d) brown-brown-black
20. 20.🌈 In the resistor colour code, which number does green stand for?
21. 21.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) green-red-black (c) orange-green-black (d) red-green-brown
24. 24.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 In the resistor colour code, which number does brown stand for?
27. 27.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) green-red-red (b) red-green-brown (c) green-red-brown (d) green-red-black
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5900 Ω resistor? (a) white-green-red (b) green-white-red (c) green-white-brown (d) green-white-orange
31. 31.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
33. 33.🌈 In the resistor colour code, which number does grey stand for?
34. 34.🌈 In the resistor colour code, which number does yellow stand for?
35. 35.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) green-brown-black (b) red-green-black (c) brown-green-brown (d) brown-green-black
37. 37.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-brown (b) violet-blue-black (c) blue-violet-black (d) blue-blue-black
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-black (b) yellow-grey-brown (c) grey-yellow-brown (d) yellow-grey-red
40. 40.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =

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