Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 818 · 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, yellow, red. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
4. 4.🌈 In the resistor colour code, which number does brown stand for?
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) yellow-grey-black (b) orange-grey-brown (c) grey-orange-black (d) orange-grey-black
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-red (b) yellow-grey-orange (c) yellow-grey-brown (d) grey-yellow-red
7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
8. 8.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-yellow (b) orange-brown-orange (c) brown-orange-orange (d) brown-orange-red
10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
11. 11.🌈 In the resistor colour code, which number does red stand for?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) grey-green-black (b) violet-green-black (c) green-violet-black (d) violet-green-brown
13. 13.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) violet-green-black (b) blue-green-brown (c) green-blue-black (d) blue-green-black
15. 15.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) red-blue-orange (b) blue-red-red (c) red-blue-brown (d) red-blue-red
17. 17.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-orange (b) orange-brown-brown (c) orange-brown-red (d) brown-orange-red
19. 19.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 In the resistor colour code, which number does black stand for?
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) brown-red-red (b) red-brown-red (c) red-brown-brown (d) red-brown-orange
22. 22.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
23. 23.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-red (b) green-red-orange (c) red-green-yellow (d) red-green-orange
26. 26.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) grey-brown-red (b) brown-grey-brown (c) brown-grey-red (d) brown-grey-orange
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-red (b) white-grey-orange (c) grey-black-orange (d) grey-black-yellow
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) white-orange-brown (c) orange-white-black (d) white-orange-black
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) blue-white-brown (b) white-blue-brown (c) blue-white-red (d) blue-white-black
33. 33.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) orange-blue-black (b) blue-orange-black (c) violet-orange-black (d) blue-orange-brown
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-red (b) red-green-black (c) green-red-brown (d) red-green-brown

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