Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 505 · 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 gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
2. 2.🌈 In the resistor colour code, which number does yellow stand for?
3. 3.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) brown-white-brown (b) white-black-black (c) white-black-red (d) white-black-brown
8. 8.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
9. 9.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
10. 10.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) yellow-blue-black (b) violet-yellow-black (c) blue-yellow-brown (d) blue-yellow-black
12. 12.🌈 A resistor has the colour bands yellow, grey, brown. What is its value (in ohms)?
13. 13.🌈 In the resistor colour code, which number does brown stand for?
14. 14.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 In the resistor colour code, which number does orange stand for?
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) blue-white-black (b) white-blue-brown (c) white-blue-black (d) brown-blue-black
18. 18.🌈 In the resistor colour code, which number does blue stand for?
19. 19.🌈 In the resistor colour code, which number does white stand for?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) grey-white-orange (b) white-grey-yellow (c) white-grey-red (d) white-grey-orange
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 6100 Ω resistor? (a) brown-blue-red (b) blue-brown-red (c) blue-brown-orange (d) blue-brown-brown
23. 23.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-brown (c) red-black-black (d) orange-black-black
30. 30.🌈 In the resistor colour code, which number does grey stand for?
31. 31.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 In the resistor colour code, which number does black stand for?
34. 34.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-brown (b) orange-yellow-red (c) orange-orange-red (d) orange-orange-orange
36. 36.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) green-orange-orange (b) orange-green-yellow (c) orange-green-red (d) orange-green-orange
39. 39.🌈 In the resistor colour code, which number does violet stand for?
40. 40.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?

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