Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 40 · 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 band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
2. 2.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) orange-blue-brown (b) orange-blue-red (c) orange-blue-orange (d) blue-orange-red
4. 4.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
8. 8.🌈 In the resistor colour code, which number does white stand for?
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-brown (b) violet-brown-orange (c) violet-brown-red (d) brown-violet-red
10. 10.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 In the resistor colour code, which number does red stand for?
13. 13.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
15. 15.🌈 In the resistor colour code, which number does black stand for?
16. 16.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
18. 18.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
20. 20.🌈 In the resistor colour code, which number does yellow stand for?
21. 21.🌈 In the resistor colour code, which number does blue stand for?
22. 22.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) orange-red-orange (c) red-black-yellow (d) red-black-orange
25. 25.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-white-black (b) grey-grey-brown (c) white-grey-black (d) grey-grey-black
29. 29.🌈 In the resistor colour code, which number does orange stand for?
30. 30.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
31. 31.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =

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