Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 585 · 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 blue, black, black. What is its value (in ohms)?
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) red-white-red (c) white-red-brown (d) red-white-brown
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
4. 4.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
5. 5.🌈 In the resistor colour code, which number does green stand for?
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-black (b) red-grey-brown (c) grey-red-brown (d) grey-red-red
7. 7.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
8. 8.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) white-brown-black (c) grey-brown-brown (d) grey-brown-black
10. 10.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) red-violet-black (c) red-violet-red (d) violet-red-brown
12. 12.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 In the resistor colour code, which number does orange stand for?
15. 15.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-red (b) orange-red-red (c) red-black-orange (d) red-black-brown
22. 22.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 In the resistor colour code, which number does red stand for?
24. 24.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) orange-brown-orange (b) brown-orange-yellow (c) brown-orange-red (d) brown-orange-orange
27. 27.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) grey-orange-black (b) orange-grey-brown (c) yellow-grey-black (d) orange-grey-black
32. 32.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 In the resistor colour code, which number does black stand for?
35. 35.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
39. 39.🌈 In the resistor colour code, which number does brown stand for?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-red (b) green-white-yellow (c) green-white-orange (d) white-green-orange

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