Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 988 · 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 68000 Ω resistor? (a) grey-blue-orange (b) blue-grey-red (c) blue-grey-yellow (d) blue-grey-orange
2. 2.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) yellow-violet-black (b) violet-yellow-black (c) yellow-violet-brown (d) green-violet-black
11. 11.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
17. 17.🌈 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
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) brown-yellow-orange (b) yellow-brown-red (c) yellow-brown-yellow (d) yellow-brown-orange
19. 19.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-brown (b) green-white-red (c) white-green-orange (d) white-green-red
25. 25.🌈 In the resistor colour code, which number does violet stand for?
26. 26.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6400 Ω resistor? (a) blue-yellow-red (b) yellow-blue-red (c) blue-yellow-orange (d) blue-yellow-brown
31. 31.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) violet-white-red (b) violet-white-orange (c) white-violet-orange (d) violet-white-yellow
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) red-white-brown (c) white-red-brown (d) red-white-red
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-black (b) grey-white-black (c) brown-grey-black (d) white-grey-brown
38. 38.🌈 In the resistor colour code, which number does white stand for?
39. 39.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?

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