Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 683 · 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 gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
3. 3.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) brown-orange-black (b) orange-brown-brown (c) orange-brown-black (d) yellow-brown-black
6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
7. 7.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
10. 10.🌈 In the resistor colour code, which number does grey stand for?
11. 11.🌈 In the resistor colour code, which number does violet stand for?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-brown (b) red-green-red (c) green-red-red (d) green-red-orange
13. 13.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands violet, blue, red. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-red-brown (b) orange-red-black (c) red-orange-black (d) red-red-black
22. 22.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
25. 25.🌈 In the resistor colour code, which number does blue stand for?
26. 26.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-violet-black (b) violet-grey-black (c) grey-violet-black (d) violet-violet-brown
28. 28.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) green-brown-orange (b) brown-green-red (c) brown-green-yellow (d) brown-green-orange
31. 31.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
33. 33.🌈 In the resistor colour code, which number does red stand for?
34. 34.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) orange-blue-black (b) violet-orange-black (c) blue-orange-brown (d) blue-orange-black
37. 37.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands violet, blue, brown. 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-white-orange (b) grey-grey-orange (c) grey-grey-yellow (d) grey-grey-red

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