Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 990 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-red (b) red-red-orange (c) red-red-yellow (d) red-orange-orange
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
3. 3.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
4. 4.🌈 In the resistor colour code, which number does red stand for?
5. 5.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-brown (b) brown-green-red (c) brown-green-orange (d) green-brown-red
7. 7.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
9. 9.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-grey-orange (b) violet-violet-yellow (c) violet-violet-red (d) violet-violet-orange
11. 11.🌈 In the resistor colour code, which number does orange stand for?
12. 12.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands green, violet, brown. What is its value (in ohms)?
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) brown-yellow-red (b) brown-yellow-orange (c) yellow-brown-orange (d) brown-yellow-yellow
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) violet-blue-red (b) blue-black-orange (c) blue-black-red (d) blue-black-brown
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) orange-black-black (b) orange-black-red (c) orange-black-brown (d) yellow-orange-brown
20. 20.🌈 In the resistor colour code, which number does yellow stand for?
21. 21.🌈 In the resistor colour code, which number does white stand for?
22. 22.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 In the resistor colour code, which number does grey stand for?
24. 24.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
27. 27.🌈 In the resistor colour code, which number does blue stand for?
28. 28.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) brown-red-black (b) white-red-brown (c) red-white-black (d) white-red-black
33. 33.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-orange (b) orange-grey-orange (c) grey-orange-yellow (d) grey-orange-red
38. 38.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =

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