Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 608 · 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 94000 Ω resistor? (a) white-yellow-yellow (b) white-yellow-orange (c) yellow-white-orange (d) white-yellow-red
2. 2.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
4. 4.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
7. 7.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 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
9. 9.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands violet, violet, orange. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 In the resistor colour code, which number does black stand for?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 360 Ω resistor? (a) orange-blue-red (b) blue-orange-brown (c) orange-blue-black (d) orange-blue-brown
13. 13.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) white-yellow-brown (b) yellow-white-red (c) yellow-white-black (d) yellow-white-brown
15. 15.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 In the resistor colour code, which number does violet stand for?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) blue-brown-black (b) brown-blue-brown (c) red-blue-black (d) brown-blue-black
19. 19.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-red (b) violet-brown-brown (c) brown-violet-brown (d) brown-violet-black
21. 21.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
22. 22.🌈 In the resistor colour code, which number does brown stand for?
23. 23.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
26. 26.🌈 In the resistor colour code, which number does red stand for?
27. 27.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) grey-brown-brown (b) brown-grey-red (c) grey-brown-red (d) grey-brown-orange
34. 34.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
35. 35.🌈 In the resistor colour code, which number does blue stand for?
36. 36.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-red (b) red-green-brown (c) green-red-brown (d) red-green-black
38. 38.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =

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