Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 39 · 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 one nearest an end (b) the gold band (c) any band (d) the widest gap
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
3. 3.🌈 In the resistor colour code, which number does brown stand for?
4. 4.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 In the resistor colour code, which number does green stand for?
6. 6.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
7. 7.🌈 In the resistor colour code, which number does blue stand for?
8. 8.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) green-black-red (b) green-black-brown (c) green-black-black (d) blue-green-brown
13. 13.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-green-red (b) yellow-yellow-red (c) yellow-yellow-brown (d) yellow-yellow-orange
17. 17.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-red (b) brown-brown-orange (c) brown-red-red (d) brown-brown-brown
20. 20.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 In the resistor colour code, which number does grey stand for?
23. 23.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
30. 30.🌈 In the resistor colour code, which number does black stand for?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97000 Ω resistor? (a) violet-white-orange (b) white-violet-yellow (c) white-violet-orange (d) white-violet-red
32. 32.🌈 In the resistor colour code, which number does red stand for?
33. 33.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands violet, violet, orange. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) green-grey-brown (b) green-grey-black (c) grey-green-black (d) blue-grey-black
39. 39.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands orange, green, red. What is its value (in ohms)?

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