Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 752 · 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 13 Ω resistor? (a) brown-orange-brown (b) red-orange-black (c) brown-orange-black (d) orange-brown-black
2. 2.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 In the resistor colour code, which number does white stand for?
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) green-yellow-brown (b) yellow-green-brown (c) yellow-green-black (d) yellow-green-red
7. 7.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
13. 13.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8500 Ω resistor? (a) green-grey-red (b) grey-green-brown (c) grey-green-red (d) grey-green-orange
16. 16.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
17. 17.🌈 In the resistor colour code, which number does blue stand for?
18. 18.🌈 In the resistor colour code, which number does grey stand for?
19. 19.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-brown (b) white-orange-red (c) orange-white-brown (d) white-orange-black
22. 22.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-orange (b) green-blue-yellow (c) green-blue-red (d) blue-green-orange
24. 24.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) white-brown-brown (c) brown-white-black (d) brown-white-brown
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) grey-green-black (b) violet-green-black (c) green-violet-black (d) violet-green-brown
27. 27.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) grey-orange-black (b) yellow-grey-black (c) orange-grey-brown (d) orange-grey-black
29. 29.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
30. 30.🌈 In the resistor colour code, which number does brown stand for?
31. 31.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) violet-orange-orange (b) orange-violet-yellow (c) orange-violet-red (d) orange-violet-orange
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) blue-violet-black (b) blue-violet-brown (c) violet-blue-black (d) violet-violet-black
35. 35.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
37. 37.🌈 In the resistor colour code, which number does red stand for?
38. 38.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
39. 39.🌈 In the resistor colour code, which number does orange stand for?
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-black-black (b) white-white-brown (c) brown-white-black (d) white-white-black

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