Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 107 · 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, orange. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) brown-white-black (c) white-brown-black (d) red-white-black
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-brown (b) red-grey-black (c) brown-grey-black (d) grey-brown-black
5. 5.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) yellow-blue-black (b) yellow-blue-red (c) yellow-blue-brown (d) blue-yellow-brown
9. 9.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 In the resistor colour code, which number does black stand for?
11. 11.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 In the resistor colour code, which number does yellow stand for?
13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-black (b) yellow-grey-brown (c) yellow-grey-red (d) grey-yellow-brown
15. 15.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
18. 18.🌈 In the resistor colour code, which number does white stand for?
19. 19.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) red-white-red (c) red-white-brown (d) white-red-brown
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) white-grey-red (b) grey-white-brown (c) grey-white-orange (d) grey-white-red
23. 23.🌈 In the resistor colour code, which number does orange stand for?
24. 24.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) green-violet-brown (b) violet-green-brown (c) violet-green-red (d) violet-green-black
27. 27.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 In the resistor colour code, which number does grey stand for?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) white-grey-black (b) grey-grey-black (c) grey-white-black (d) grey-grey-brown
31. 31.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) grey-white-red (b) grey-white-black (c) grey-white-brown (d) white-grey-brown
34. 34.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) white-green-brown (b) white-green-black (c) brown-green-black (d) green-white-black
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-orange (b) white-grey-orange (c) grey-white-yellow (d) grey-white-red

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