Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 196 · 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, yellow, black. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
3. 3.🌈 In the resistor colour code, which number does black stand for?
4. 4.🌈 In the resistor colour code, which number does yellow stand for?
5. 5.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
7. 7.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-black (b) green-black-brown (c) blue-green-black (d) blue-black-black
10. 10.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
13. 13.🌈 In the resistor colour code, which number does white stand for?
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-red-black (b) orange-orange-black (c) red-orange-black (d) red-orange-brown
15. 15.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 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
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5900 Ω resistor? (a) green-white-brown (b) green-white-orange (c) green-white-red (d) white-green-red
19. 19.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) blue-white-red (b) blue-white-orange (c) white-blue-orange (d) blue-white-yellow
22. 22.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-orange (b) brown-red-red (c) brown-brown-red (d) brown-brown-brown
29. 29.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87000 Ω resistor? (a) grey-violet-red (b) grey-violet-yellow (c) grey-violet-orange (d) violet-grey-orange
40. 40.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =

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