Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 898 · 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.🌈 In the resistor colour code, which number does brown stand for?
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
3. 3.🌈 In the resistor colour code, which number does violet stand for?
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) grey-violet-red (b) violet-black-red (c) violet-black-orange (d) violet-black-brown
5. 5.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-white-black (b) brown-black-black (c) white-black-black (d) white-black-brown
10. 10.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 In the resistor colour code, which number does white stand for?
14. 14.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-black (b) white-yellow-black (c) yellow-white-brown (d) green-white-black
19. 19.🌈 In the resistor colour code, which number does yellow stand for?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-black (b) brown-white-red (c) white-brown-brown (d) brown-white-brown
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-brown (b) violet-brown-orange (c) brown-violet-red (d) violet-brown-red
22. 22.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-violet-brown (b) grey-violet-black (c) violet-grey-black (d) violet-violet-black
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-violet-yellow (b) violet-violet-red (c) violet-violet-orange (d) violet-grey-orange
25. 25.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) grey-red-brown (b) white-red-black (c) red-grey-black (d) grey-red-black
27. 27.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) brown-orange-black (c) orange-brown-brown (d) yellow-brown-black
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-red (b) yellow-white-orange (c) yellow-white-brown (d) white-yellow-red
30. 30.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
33. 33.🌈 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
34. 34.🌈 In the resistor colour code, which number does blue stand for?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-orange (c) orange-black-yellow (d) orange-black-red
36. 36.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?

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