Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 67 · 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 gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
2. 2.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) grey-white-orange (b) grey-white-brown (c) grey-white-red (d) white-grey-red
4. 4.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
7. 7.🌈 In the resistor colour code, which number does orange stand for?
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-black (b) green-grey-black (c) grey-green-brown (d) white-green-black
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-red (b) yellow-white-yellow (c) white-yellow-orange (d) yellow-white-orange
10. 10.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) yellow-white-black (b) white-yellow-black (c) white-yellow-brown (d) brown-yellow-black
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-red (b) white-yellow-red (c) yellow-white-orange (d) yellow-white-brown
15. 15.🌈 In the resistor colour code, which number does grey stand for?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) violet-grey-red (b) violet-grey-yellow (c) violet-grey-orange (d) grey-violet-orange
17. 17.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-grey-orange (b) grey-grey-yellow (c) grey-grey-red (d) grey-white-orange
22. 22.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-orange (b) yellow-green-red (c) green-yellow-red (d) yellow-green-brown
24. 24.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-black (b) yellow-red-brown (c) red-yellow-red (d) red-yellow-brown
31. 31.🌈 In the resistor colour code, which number does brown stand for?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) blue-white-black (b) white-blue-brown (c) blue-white-red (d) blue-white-brown
33. 33.🌈 In the resistor colour code, which number does red stand for?
34. 34.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
36. 36.🌈 In the resistor colour code, which number does green stand for?
37. 37.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) orange-white-black (c) white-orange-brown (d) white-orange-black
39. 39.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?

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