Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 804 · 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.🌈 In the resistor colour code, which number does black stand for?
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-orange (b) violet-green-red (c) violet-green-brown (d) green-violet-red
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
4. 4.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 In the resistor colour code, which number does brown stand for?
6. 6.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
7. 7.🌈 In the resistor colour code, which number does orange stand for?
8. 8.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 In the resistor colour code, which number does violet stand for?
10. 10.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
12. 12.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
15. 15.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) red-white-black (b) brown-white-brown (c) brown-white-black (d) white-brown-black
20. 20.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
21. 21.🌈 In the resistor colour code, which number does grey stand for?
22. 22.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands yellow, grey, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands violet, violet, orange. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) yellow-brown-black (b) orange-brown-brown (c) brown-orange-black (d) orange-brown-black
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) orange-yellow-black (b) yellow-orange-black (c) yellow-yellow-black (d) orange-yellow-brown
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) orange-white-black (b) brown-orange-black (c) white-orange-brown (d) white-orange-black
37. 37.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-brown (b) green-violet-red (c) violet-green-brown (d) green-violet-black
39. 39.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =

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