Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 446 · 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 grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
4. 4.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
5. 5.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) violet-orange-brown (b) violet-orange-black (c) grey-orange-black (d) orange-violet-black
7. 7.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
8. 8.🌈 In the resistor colour code, which number does orange stand for?
9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
10. 10.🌈 A resistor has the colour bands orange, violet, orange. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-yellow (b) blue-green-orange (c) blue-green-red (d) green-blue-orange
13. 13.🌈 In the resistor colour code, which number does red stand for?
14. 14.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 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
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) white-yellow-orange (b) white-yellow-red (c) white-yellow-brown (d) yellow-white-red
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-red (b) violet-green-brown (c) green-violet-red (d) violet-green-orange
18. 18.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5800 Ω resistor? (a) green-grey-red (b) grey-green-red (c) green-grey-orange (d) green-grey-brown
20. 20.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-orange (b) violet-grey-brown (c) grey-violet-red (d) violet-grey-red
27. 27.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-red (b) violet-blue-black (c) violet-blue-brown (d) blue-violet-brown
32. 32.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) red-white-brown (b) white-red-red (c) white-red-black (d) white-red-brown
36. 36.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
38. 38.🌈 In the resistor colour code, which number does white stand for?
39. 39.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) white-grey-black (b) grey-grey-black (c) grey-grey-brown (d) grey-white-black

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