Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 109 · 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 orange, grey, red. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
7. 7.🌈 In the resistor colour code, which number does grey stand for?
8. 8.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
10. 10.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
12. 12.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-red (b) brown-white-brown (c) white-black-black (d) white-black-brown
14. 14.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
16. 16.🌈 In the resistor colour code, which number does brown stand for?
17. 17.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
20. 20.🌈 In the resistor colour code, which number does violet stand for?
21. 21.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) green-yellow-black (c) yellow-green-black (d) yellow-yellow-black
24. 24.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-black (b) violet-red-brown (c) red-violet-red (d) red-violet-brown
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) blue-brown-black (b) red-blue-black (c) brown-blue-brown (d) brown-blue-black
30. 30.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
31. 31.🌈 In the resistor colour code, which number does black stand for?
32. 32.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-red (b) grey-white-yellow (c) grey-white-orange (d) white-grey-orange
34. 34.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 In the resistor colour code, which number does green stand for?
36. 36.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) yellow-red-red (b) red-yellow-red (c) red-yellow-brown (d) red-yellow-orange
38. 38.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 In the resistor colour code, which number does red stand for?
40. 40.🌈 In the resistor colour code, which number does orange stand for?

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