Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 679 · 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 brown, white, orange. What is its value (in ohms)?
2. 2.🌈 In the resistor colour code, which number does green stand for?
3. 3.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 In the resistor colour code, which number does grey stand for?
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-brown (b) white-white-black (c) brown-white-black (d) white-black-black
6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
7. 7.🌈 In the resistor colour code, which number does blue stand for?
8. 8.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
10. 10.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) red-violet-red (c) violet-red-brown (d) red-violet-black
12. 12.🌈 In the resistor colour code, which number does brown stand for?
13. 13.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 In the resistor colour code, which number does yellow stand for?
17. 17.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 In the resistor colour code, which number does orange stand for?
20. 20.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) yellow-white-black (b) white-yellow-brown (c) brown-yellow-black (d) white-yellow-black
23. 23.🌈 In the resistor colour code, which number does black stand for?
24. 24.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-yellow-brown (b) yellow-green-red (c) yellow-yellow-orange (d) yellow-yellow-red
32. 32.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-black (b) red-black-red (c) orange-red-brown (d) red-black-brown
38. 38.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =

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