Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 388 · 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 blue stand for?
2. 2.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
6. 6.🌈 In the resistor colour code, which number does grey stand for?
7. 7.🌈 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
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-brown (b) white-brown-orange (c) white-brown-red (d) brown-white-red
9. 9.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
12. 12.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-red (b) grey-brown-red (c) brown-grey-orange (d) brown-grey-brown
16. 16.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 In the resistor colour code, which number does brown stand for?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) blue-red-black (b) green-red-brown (c) red-green-black (d) green-red-black
25. 25.🌈 A resistor has the colour bands blue, white, orange. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-grey-black (b) violet-grey-brown (c) grey-violet-black (d) violet-grey-black
27. 27.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) brown-blue-black (b) blue-brown-brown (c) brown-blue-red (d) brown-blue-brown
32. 32.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-red (b) grey-black-brown (c) white-grey-brown (d) grey-black-black
34. 34.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 In the resistor colour code, which number does white stand for?
39. 39.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-red (b) grey-white-orange (c) white-grey-orange (d) white-grey-yellow

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