Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 225 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-brown (b) red-green-orange (c) red-green-red (d) green-red-red
2. 2.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
4. 4.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) violet-black-red (b) violet-black-brown (c) grey-violet-brown (d) violet-black-black
13. 13.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 In the resistor colour code, which number does white stand for?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-orange (b) white-green-red (c) green-white-red (d) white-green-brown
21. 21.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) red-white-brown (b) white-red-red (c) white-red-brown (d) white-red-black
24. 24.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
25. 25.🌈 In the resistor colour code, which number does yellow stand for?
26. 26.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) red-blue-brown (b) red-blue-red (c) red-blue-orange (d) blue-red-red
28. 28.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) white-blue-brown (b) blue-white-brown (c) blue-white-red (d) blue-white-black
31. 31.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
32. 32.🌈 In the resistor colour code, which number does orange stand for?
33. 33.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
39. 39.🌈 In the resistor colour code, which number does black stand for?
40. 40.🌈 In the resistor colour code, which number does blue stand for?

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