Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 627 · 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 7500 Ω resistor? (a) violet-green-brown (b) violet-green-orange (c) green-violet-red (d) violet-green-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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) violet-grey-red (b) grey-violet-brown (c) violet-grey-brown (d) violet-grey-black
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-brown (b) red-red-black (c) brown-red-black (d) red-brown-black
5. 5.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-red (b) green-brown-orange (c) green-brown-yellow (d) brown-green-orange
7. 7.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 In the resistor colour code, which number does black stand for?
10. 10.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
12. 12.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 In the resistor colour code, which number does red stand for?
15. 15.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) violet-white-brown (b) violet-white-red (c) violet-white-black (d) white-violet-brown
27. 27.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
30. 30.🌈 In the resistor colour code, which number does blue stand for?
31. 31.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
32. 32.🌈 In the resistor colour code, which number does yellow stand for?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-yellow (b) violet-orange-orange (c) orange-violet-orange (d) violet-orange-red
34. 34.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-green-red (b) green-blue-orange (c) green-green-yellow (d) green-green-orange
36. 36.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
37. 37.🌈 In the resistor colour code, which number does grey stand for?
38. 38.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =

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