Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 925 · 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 violet, black, black. What is its value (in ohms)?
2. 2.🌈 In the resistor colour code, which number does violet stand for?
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
4. 4.🌈 In the resistor colour code, which number does yellow stand for?
5. 5.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 In the resistor colour code, which number does green stand for?
9. 9.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) brown-grey-black (b) grey-white-black (c) white-grey-brown (d) white-grey-black
11. 11.🌈 In the resistor colour code, which number does black stand for?
12. 12.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-red (b) violet-brown-black (c) brown-violet-brown (d) violet-brown-brown
19. 19.🌈 In the resistor colour code, which number does white stand for?
20. 20.🌈 In the resistor colour code, which number does blue stand for?
21. 21.🌈 In the resistor colour code, which number does orange stand for?
22. 22.🌈 In the resistor colour code, which number does red stand for?
23. 23.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-red (b) green-red-orange (c) green-red-yellow (d) red-green-orange
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17000 Ω resistor? (a) brown-violet-red (b) brown-violet-orange (c) violet-brown-orange (d) brown-violet-yellow
28. 28.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 960 Ω resistor? (a) white-blue-brown (b) white-blue-black (c) white-blue-red (d) blue-white-brown
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) red-grey-black (d) red-grey-brown
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) white-brown-red (b) white-brown-black (c) brown-white-brown (d) white-brown-brown
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-orange (b) red-violet-brown (c) red-violet-red (d) violet-red-red
34. 34.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-red (b) violet-blue-red (c) blue-black-orange (d) blue-black-brown

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