Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 800 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-brown (b) white-white-red (c) white-white-orange (d) white-black-red
2. 2.🌈 In the resistor colour code, which number does black stand for?
3. 3.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) violet-yellow-brown (b) yellow-violet-black (c) yellow-violet-brown (d) yellow-violet-red
5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) orange-yellow-black (b) yellow-orange-black (c) yellow-orange-brown (d) green-orange-black
7. 7.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
10. 10.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
12. 12.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 In the resistor colour code, which number does yellow stand for?
15. 15.🌈 In the resistor colour code, which number does grey stand for?
16. 16.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 In the resistor colour code, which number does red stand for?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) violet-yellow-black (b) violet-yellow-brown (c) grey-yellow-black (d) yellow-violet-black
19. 19.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-red (b) white-yellow-black (c) yellow-white-brown (d) white-yellow-brown
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-orange (b) brown-orange-yellow (c) orange-brown-orange (d) brown-orange-red
24. 24.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-black (b) white-grey-brown (c) grey-black-red (d) grey-black-brown
32. 32.🌈 In the resistor colour code, which number does green stand for?
33. 33.🌈 In the resistor colour code, which number does white stand for?
34. 34.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
36. 36.🌈 In the resistor colour code, which number does orange stand for?
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) grey-white-black (b) white-grey-black (c) grey-white-brown (d) white-white-black
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-red-black (b) red-brown-black (c) brown-brown-black (d) brown-brown-brown
39. 39.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) red-brown-brown (b) brown-red-red (c) brown-red-black (d) brown-red-brown

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