Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 128 · 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 green stand for?
2. 2.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
4. 4.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) green-black-red (b) green-black-black (c) green-black-brown (d) blue-green-brown
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) orange-red-black (b) red-red-black (c) red-red-brown (d) red-orange-black
7. 7.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) grey-brown-red (b) brown-grey-orange (c) grey-brown-orange (d) grey-brown-yellow
9. 9.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-yellow (b) red-grey-orange (c) grey-red-orange (d) red-grey-red
11. 11.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 In the resistor colour code, which number does brown stand for?
13. 13.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) yellow-red-brown (b) red-yellow-black (c) red-yellow-brown (d) red-yellow-red
15. 15.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 In the resistor colour code, which number does white stand for?
17. 17.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 In the resistor colour code, which number does orange stand for?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) red-white-brown (b) white-red-red (c) red-white-orange (d) red-white-red
28. 28.🌈 In the resistor colour code, which number does violet stand for?
29. 29.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
34. 34.🌈 In the resistor colour code, which number does red stand for?
35. 35.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 In the resistor colour code, which number does black stand for?
37. 37.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?

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