Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 273 · 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 red, white, orange. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
3. 3.🌈 In the resistor colour code, which number does orange stand for?
4. 4.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) red-white-brown (c) white-red-brown (d) red-white-black
7. 7.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
10. 10.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
11. 11.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-red (b) yellow-white-yellow (c) yellow-white-orange (d) white-yellow-orange
15. 15.🌈 In the resistor colour code, which number does brown stand for?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94000 Ω resistor? (a) white-yellow-orange (b) yellow-white-orange (c) white-yellow-yellow (d) white-yellow-red
17. 17.🌈 In the resistor colour code, which number does black stand for?
18. 18.🌈 In the resistor colour code, which number does blue stand for?
19. 19.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) blue-green-brown (b) green-black-brown (c) green-black-black (d) green-black-red
24. 24.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-orange (b) red-orange-red (c) orange-red-brown (d) orange-red-red
27. 27.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) orange-brown-black (c) brown-orange-black (d) yellow-brown-black
29. 29.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-brown-black (b) brown-black-black (c) brown-black-brown (d) red-black-black
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) orange-grey-brown (b) grey-orange-black (c) grey-orange-brown (d) grey-orange-red
35. 35.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?

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