Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 781 · 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, brown, red. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
4. 4.🌈 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
5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
6. 6.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
11. 11.🌈 In the resistor colour code, which number does white stand for?
12. 12.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) white-brown-brown (b) brown-white-red (c) brown-white-brown (d) brown-white-black
14. 14.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60 Ω resistor? (a) blue-black-black (b) blue-black-brown (c) violet-black-black (d) violet-blue-black
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-orange (b) grey-violet-red (c) violet-grey-brown (d) violet-grey-red
19. 19.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 In the resistor colour code, which number does brown stand for?
21. 21.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
24. 24.🌈 In the resistor colour code, which number does green stand for?
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-red (b) blue-brown-orange (c) brown-blue-yellow (d) brown-blue-orange
26. 26.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) white-red-brown (b) red-white-black (c) brown-red-black (d) white-red-black
29. 29.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 In the resistor colour code, which number does yellow stand for?
31. 31.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 In the resistor colour code, which number does red stand for?
34. 34.🌈 In the resistor colour code, which number does blue stand for?
35. 35.🌈 In the resistor colour code, which number does black stand for?
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) blue-grey-black (b) grey-blue-brown (c) white-blue-black (d) grey-blue-black
37. 37.🌈 A resistor has the colour bands yellow, grey, orange. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) yellow-blue-red (b) blue-yellow-red (c) yellow-blue-brown (d) yellow-blue-orange
39. 39.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?

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