Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 142 · 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 white stand for?
2. 2.🌈 In the resistor colour code, which number does yellow stand for?
3. 3.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) brown-grey-orange (b) grey-brown-yellow (c) grey-brown-orange (d) grey-brown-red
6. 6.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
10. 10.🌈 In the resistor colour code, which number does grey stand for?
11. 11.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) yellow-violet-brown (b) violet-yellow-red (c) violet-yellow-black (d) violet-yellow-brown
13. 13.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) grey-orange-brown (b) white-orange-black (c) orange-grey-black (d) grey-orange-black
15. 15.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
16. 16.🌈 In the resistor colour code, which number does black stand for?
17. 17.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
22. 22.🌈 In the resistor colour code, which number does red stand for?
23. 23.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
26. 26.🌈 In the resistor colour code, which number does green stand for?
27. 27.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-orange (b) green-yellow-brown (c) yellow-green-red (d) green-yellow-red
29. 29.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 In the resistor colour code, which number does orange stand for?
31. 31.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) orange-yellow-orange (b) yellow-orange-yellow (c) yellow-orange-orange (d) yellow-orange-red
33. 33.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) grey-yellow-black (b) green-grey-black (c) yellow-grey-black (d) yellow-grey-brown
36. 36.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) blue-red-red (b) red-blue-orange (c) red-blue-brown (d) red-blue-red
40. 40.🌈 In the resistor colour code, which number does blue stand for?

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