Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 556 · 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 orange, violet, orange. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
4. 4.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
5. 5.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
8. 8.🌈 In the resistor colour code, which number does white stand for?
9. 9.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) red-yellow-black (b) green-red-black (c) yellow-red-black (d) yellow-red-brown
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) white-yellow-brown (b) white-yellow-orange (c) yellow-white-red (d) white-yellow-red
13. 13.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 In the resistor colour code, which number does violet stand for?
15. 15.🌈 In the resistor colour code, which number does brown stand for?
16. 16.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) orange-yellow-black (b) orange-yellow-red (c) orange-yellow-brown (d) yellow-orange-brown
24. 24.🌈 In the resistor colour code, which number does green stand for?
25. 25.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) white-violet-brown (b) violet-white-brown (c) violet-white-red (d) violet-white-black
28. 28.🌈 In the resistor colour code, which number does blue stand for?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) red-white-black (c) red-white-brown (d) white-red-brown
30. 30.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-brown (b) blue-red-black (c) green-red-black (d) red-green-black
32. 32.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) green-black-brown (b) green-black-red (c) blue-green-brown (d) green-black-black
34. 34.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
35. 35.🌈 In the resistor colour code, which number does grey stand for?
36. 36.🌈 In the resistor colour code, which number does yellow stand for?
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) yellow-green-red (b) green-yellow-red (c) green-yellow-brown (d) green-yellow-orange
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-red (b) white-yellow-red (c) yellow-white-orange (d) yellow-white-brown
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) grey-red-black (b) grey-red-brown (c) red-grey-black (d) white-red-black
40. 40.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?

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