Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 867 · 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, blue, red. What is its value (in ohms)?
2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
3. 3.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-yellow (d) red-orange-red
6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
7. 7.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
12. 12.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) grey-orange-black (b) orange-grey-black (c) grey-orange-brown (d) white-orange-black
14. 14.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
16. 16.🌈 In the resistor colour code, which number does black stand for?
17. 17.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-red (b) violet-red-orange (c) red-violet-orange (d) violet-red-yellow
22. 22.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) green-yellow-black (b) green-yellow-brown (c) green-yellow-red (d) yellow-green-brown
24. 24.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
27. 27.🌈 In the resistor colour code, which number does green stand for?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) orange-grey-brown (b) grey-orange-red (c) grey-orange-brown (d) grey-orange-black
29. 29.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 In the resistor colour code, which number does white stand for?
34. 34.🌈 In the resistor colour code, which number does blue stand for?
35. 35.🌈 A resistor has the colour bands yellow, grey, brown. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-orange (b) white-brown-brown (c) brown-white-red (d) white-brown-red
38. 38.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =

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