Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 471 · 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 brown, violet, red. What is its value (in ohms)?
2. 2.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
3. 3.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-yellow (b) green-brown-orange (c) green-brown-red (d) brown-green-orange
7. 7.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
10. 10.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 In the resistor colour code, which number does black stand for?
12. 12.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) blue-yellow-black (b) blue-yellow-brown (c) yellow-blue-brown (d) blue-yellow-red
15. 15.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
17. 17.🌈 In the resistor colour code, which number does violet stand for?
18. 18.🌈 In the resistor colour code, which number does red stand for?
19. 19.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
20. 20.🌈 In the resistor colour code, which number does brown stand for?
21. 21.🌈 In the resistor colour code, which number does yellow stand for?
22. 22.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-orange (b) grey-brown-orange (c) brown-grey-yellow (d) brown-grey-red
24. 24.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
25. 25.🌈 In the resistor colour code, which number does orange stand for?
26. 26.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) brown-grey-black (b) white-grey-brown (c) white-grey-black (d) grey-white-black
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-orange (b) brown-orange-red (c) orange-brown-orange (d) brown-orange-yellow
31. 31.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands brown, blue, red. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-green-orange (b) green-blue-orange (c) green-green-yellow (d) green-green-red
39. 39.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?

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