Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 445 · 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 brown, red, red. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
3. 3.🌈 In the resistor colour code, which number does orange stand for?
4. 4.🌈 A resistor has the colour bands green, brown, yellow. 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) 50 % (b) 0 % (c) 5 % (d) 25 %
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-brown (b) red-black-orange (c) orange-red-red (d) red-black-red
7. 7.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) white-green-yellow (b) white-green-red (c) green-white-orange (d) white-green-orange
10. 10.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) green-violet-black (b) yellow-violet-brown (c) violet-yellow-black (d) yellow-violet-black
12. 12.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 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
14. 14.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) red-black-orange (c) red-black-yellow (d) orange-red-orange
16. 16.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) blue-orange-black (b) orange-blue-brown (c) orange-blue-black (d) yellow-blue-black
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-orange (b) green-grey-orange (c) grey-green-yellow (d) grey-green-red
21. 21.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) green-blue-black (b) green-green-black (c) blue-green-black (d) green-green-brown
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-brown (b) blue-brown-black (c) brown-blue-black (d) red-blue-black
25. 25.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) grey-yellow-brown (b) yellow-grey-black (c) yellow-grey-brown (d) yellow-grey-red
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) green-orange-black (b) orange-green-brown (c) orange-green-black (d) yellow-green-black
28. 28.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
29. 29.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) green-red-black (b) red-green-brown (c) green-red-red (d) green-red-brown
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-red (b) yellow-green-brown (c) green-yellow-brown (d) yellow-green-black
32. 32.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-orange (b) blue-green-red (c) blue-green-yellow (d) green-blue-orange
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) blue-white-red (b) white-blue-orange (c) blue-white-orange (d) blue-white-yellow
35. 35.🌈 In the resistor colour code, which number does grey stand for?
36. 36.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-brown (c) yellow-orange-black (d) yellow-orange-red
39. 39.🌈 In the resistor colour code, which number does red stand for?
40. 40.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =

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