Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 353 · 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 blue, green, orange. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 In the resistor colour code, which number does red stand for?
4. 4.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) green-violet-red (b) green-violet-yellow (c) green-violet-orange (d) violet-green-orange
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-red (b) brown-white-orange (c) white-black-yellow (d) white-black-orange
9. 9.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-red (b) white-white-black (c) white-black-brown (d) white-white-brown
11. 11.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) white-green-brown (b) green-white-black (c) white-green-black (d) brown-green-black
13. 13.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
14. 14.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
15. 15.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 In the resistor colour code, which number does grey stand for?
17. 17.🌈 In the resistor colour code, which number does black stand for?
18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
19. 19.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-brown (b) green-green-red (c) green-green-black (d) green-blue-brown
24. 24.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
27. 27.🌈 In the resistor colour code, which number does brown stand for?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-red (b) red-orange-yellow (c) orange-red-orange (d) red-orange-orange
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) yellow-violet-brown (b) yellow-violet-black (c) violet-yellow-black (d) green-violet-black
30. 30.🌈 In the resistor colour code, which number does blue stand for?
31. 31.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-yellow (b) violet-brown-red (c) brown-violet-orange (d) violet-brown-orange
33. 33.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-brown (b) green-yellow-black (c) green-green-black (d) yellow-green-black
35. 35.🌈 In the resistor colour code, which number does yellow stand for?
36. 36.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-brown (b) white-grey-orange (c) white-grey-red (d) grey-white-red

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