Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 137 · 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 brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 In the resistor colour code, which number does blue stand for?
4. 4.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
7. 7.🌈 In the resistor colour code, which number does white stand for?
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) grey-yellow-orange (b) yellow-grey-yellow (c) yellow-grey-orange (d) yellow-grey-red
9. 9.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
12. 12.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-grey-black (b) violet-grey-black (c) grey-violet-black (d) violet-grey-brown
14. 14.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 In the resistor colour code, which number does grey stand for?
16. 16.🌈 In the resistor colour code, which number does yellow stand for?
17. 17.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) red-grey-brown (b) grey-red-black (c) grey-red-red (d) grey-red-brown
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-orange (b) violet-grey-red (c) grey-violet-brown (d) grey-violet-red
20. 20.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) red-orange-brown (b) orange-red-red (c) orange-red-black (d) orange-red-brown
22. 22.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) white-red-orange (b) red-white-red (c) red-white-orange (d) red-white-yellow
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-red (b) blue-red-orange (c) blue-red-yellow (d) red-blue-orange
26. 26.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-blue-red (b) green-green-orange (c) green-green-red (d) green-green-brown
28. 28.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
29. 29.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-orange (b) green-white-red (c) white-green-brown (d) white-green-red
33. 33.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
35. 35.🌈 In the resistor colour code, which number does brown stand for?
36. 36.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 In the resistor colour code, which number does orange stand for?
38. 38.🌈 In the resistor colour code, which number does red stand for?
39. 39.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?

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