Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 381 · 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 blue, yellow, black. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 In the resistor colour code, which number does black stand for?
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-red (b) green-blue-brown (c) blue-green-brown (d) green-blue-black
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-red (b) orange-white-yellow (c) orange-white-orange (d) white-orange-orange
6. 6.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-orange-orange (b) red-red-yellow (c) red-red-red (d) red-red-orange
8. 8.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) orange-red-black (b) red-orange-black (c) red-red-brown (d) red-red-black
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8300 Ω resistor? (a) grey-orange-red (b) grey-orange-orange (c) grey-orange-brown (d) orange-grey-red
11. 11.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
12. 12.🌈 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
13. 13.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
15. 15.🌈 In the resistor colour code, which number does brown stand for?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) grey-orange-black (b) violet-orange-brown (c) violet-orange-black (d) orange-violet-black
17. 17.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-brown (b) white-violet-black (c) violet-grey-black (d) grey-violet-black
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) green-red-red (b) green-red-brown (c) red-green-brown (d) green-red-black
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) violet-green-black (b) violet-green-brown (c) green-violet-black (d) grey-green-black
21. 21.🌈 In the resistor colour code, which number does red stand for?
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) brown-blue-brown (b) brown-blue-black (c) blue-brown-brown (d) brown-blue-red
23. 23.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-yellow (b) green-red-red (c) green-red-orange (d) red-green-orange
27. 27.🌈 In the resistor colour code, which number does white stand for?
28. 28.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-red (b) violet-brown-brown (c) brown-violet-black (d) brown-violet-brown
30. 30.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-brown (b) red-red-red (c) red-red-black (d) red-orange-brown
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) blue-grey-black (b) grey-green-black (c) green-grey-brown (d) green-grey-black
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) yellow-violet-red (b) violet-yellow-orange (c) violet-yellow-red (d) violet-yellow-brown
36. 36.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) brown-blue-orange (b) blue-brown-yellow (c) blue-brown-red (d) blue-brown-orange
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-black-black (b) violet-black-brown (c) grey-violet-black (d) violet-black-black
40. 40.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =

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