Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 733 · 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 orange, black, red. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 In the resistor colour code, which number does black stand for?
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
4. 4.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) white-green-black (b) blue-white-black (c) green-white-black (d) green-white-brown
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) grey-white-red (b) white-grey-brown (c) grey-white-brown (d) grey-white-black
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-orange (b) yellow-yellow-yellow (c) yellow-green-orange (d) yellow-yellow-red
8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-brown (b) green-white-black (c) white-yellow-black (d) yellow-white-black
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) red-white-black (c) white-red-brown (d) red-white-brown
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) red-green-red (b) green-red-brown (c) green-red-orange (d) green-red-red
12. 12.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 In the resistor colour code, which number does blue stand for?
15. 15.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) yellow-brown-black (b) brown-yellow-black (c) green-brown-black (d) yellow-brown-brown
28. 28.🌈 In the resistor colour code, which number does yellow stand for?
29. 29.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
30. 30.🌈 In the resistor colour code, which number does brown stand for?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) green-blue-black (b) green-blue-brown (c) blue-green-black (d) blue-blue-black
32. 32.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-brown (b) orange-brown-red (c) orange-brown-orange (d) brown-orange-red
34. 34.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 In the resistor colour code, which number does orange stand for?
37. 37.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-orange-brown (c) red-red-brown (d) red-red-black

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