Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 215 · 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 grey, violet, red. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands yellow, orange, black. What is its value (in ohms)?
3. 3.🌈 In the resistor colour code, which number does green stand for?
4. 4.🌈 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
5. 5.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) white-yellow-red (b) yellow-white-red (c) yellow-white-brown (d) yellow-white-orange
11. 11.🌈 In the resistor colour code, which number does black stand for?
12. 12.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) yellow-blue-brown (b) blue-yellow-red (c) yellow-blue-orange (d) yellow-blue-red
16. 16.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-red (b) violet-green-orange (c) green-violet-red (d) violet-green-brown
18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
19. 19.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 In the resistor colour code, which number does white stand for?
24. 24.🌈 In the resistor colour code, which number does brown stand for?
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) blue-grey-yellow (b) blue-grey-red (c) grey-blue-orange (d) blue-grey-orange
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-brown (b) green-yellow-black (c) yellow-green-black (d) green-green-black
27. 27.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) white-violet-brown (b) violet-white-brown (c) violet-white-black (d) violet-white-red
30. 30.🌈 In the resistor colour code, which number does orange stand for?
31. 31.🌈 In the resistor colour code, which number does yellow stand for?
32. 32.🌈 In the resistor colour code, which number does red stand for?
33. 33.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 In the resistor colour code, which number does violet stand for?
40. 40.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =

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