Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 462 · 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 black stand for?
2. 2.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 In the resistor colour code, which number does white stand for?
4. 4.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) orange-white-black (b) white-orange-black (c) brown-orange-black (d) white-orange-brown
6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-red (b) violet-red-orange (c) red-violet-yellow (d) red-violet-orange
8. 8.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
10. 10.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
11. 11.🌈 In the resistor colour code, which number does red stand for?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) green-yellow-black (b) blue-yellow-black (c) yellow-green-black (d) green-yellow-brown
13. 13.🌈 In the resistor colour code, which number does orange stand for?
14. 14.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-yellow (c) orange-black-red (d) orange-black-orange
17. 17.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
18. 18.🌈 In the resistor colour code, which number does green stand for?
19. 19.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) grey-green-black (b) violet-green-brown (c) violet-green-black (d) green-violet-black
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-black (b) brown-black-black (c) white-black-brown (d) brown-white-black
27. 27.🌈 In the resistor colour code, which number does grey stand for?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-yellow (b) yellow-yellow-orange (c) yellow-green-orange (d) yellow-yellow-red
29. 29.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-orange (b) grey-blue-red (c) blue-grey-brown (d) blue-grey-red
39. 39.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =

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