Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 21 · 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, black, red. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 In the resistor colour code, which number does brown stand for?
3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-red (b) orange-violet-yellow (c) violet-orange-orange (d) orange-violet-orange
4. 4.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-red (b) blue-red-brown (c) red-blue-brown (d) blue-red-black
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) white-yellow-orange (b) yellow-white-red (c) white-yellow-brown (d) white-yellow-red
10. 10.🌈 In the resistor colour code, which number does white stand for?
11. 11.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) green-white-brown (b) white-green-brown (c) white-green-black (d) white-green-red
13. 13.🌈 In the resistor colour code, which number does violet stand for?
14. 14.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
15. 15.🌈 In the resistor colour code, which number does blue stand for?
16. 16.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
18. 18.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 In the resistor colour code, which number does black stand for?
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) white-green-black (d) grey-green-black
27. 27.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) yellow-green-black (c) yellow-yellow-black (d) green-yellow-black
29. 29.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5900 Ω resistor? (a) green-white-red (b) green-white-orange (c) white-green-red (d) green-white-brown
31. 31.🌈 In the resistor colour code, which number does orange stand for?
32. 32.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
34. 34.🌈 In the resistor colour code, which number does grey stand for?
35. 35.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
36. 36.🌈 In the resistor colour code, which number does red stand for?
37. 37.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-black (b) red-green-brown (c) red-green-red (d) green-red-brown
39. 39.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-black (b) red-brown-black (c) red-red-black (d) brown-red-brown

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