Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 875 · 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 9000 Ω resistor? (a) white-black-brown (b) white-black-red (c) white-black-orange (d) brown-white-red
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) grey-green-orange (b) green-grey-red (c) green-grey-orange (d) green-grey-yellow
3. 3.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-orange (b) white-grey-red (c) white-grey-yellow (d) grey-white-orange
7. 7.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-brown (b) brown-blue-black (c) violet-brown-black (d) blue-brown-black
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-red (c) grey-yellow-black (d) grey-yellow-brown
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) violet-white-black (b) blue-white-brown (c) white-blue-black (d) blue-white-black
11. 11.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-black (b) white-yellow-black (c) green-white-black (d) yellow-white-brown
17. 17.🌈 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
18. 18.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-yellow (b) violet-green-red (c) violet-green-orange (d) green-violet-orange
23. 23.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands violet, violet, orange. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
30. 30.🌈 In the resistor colour code, which number does orange stand for?
31. 31.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-red (b) green-grey-brown (c) grey-green-brown (d) green-grey-black
34. 34.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
36. 36.🌈 In the resistor colour code, which number does blue stand for?
37. 37.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
40. 40.🌈 In the resistor colour code, which number does black stand for?

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