Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 663 · 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 red, grey, red. What is its value (in ohms)?
2. 2.🌈 In the resistor colour code, which number does yellow stand for?
3. 3.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
6. 6.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
7. 7.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
8. 8.🌈 In the resistor colour code, which number does red stand for?
9. 9.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
11. 11.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 In the resistor colour code, which number does black stand for?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-brown (b) green-yellow-red (c) yellow-black-red (d) yellow-black-orange
14. 14.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
15. 15.🌈 In the resistor colour code, which number does grey stand for?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-orange (b) white-grey-red (c) white-grey-brown (d) grey-white-red
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-brown (b) brown-blue-black (c) red-blue-black (d) blue-brown-black
18. 18.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
25. 25.🌈 In the resistor colour code, which number does violet stand for?
26. 26.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-brown (b) grey-grey-orange (c) grey-white-red (d) grey-grey-red
30. 30.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) brown-grey-brown (c) red-grey-black (d) brown-grey-black
33. 33.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
35. 35.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5900 Ω resistor? (a) white-green-red (b) green-white-orange (c) green-white-red (d) green-white-brown
37. 37.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-yellow (b) orange-grey-orange (c) orange-grey-red (d) grey-orange-orange
40. 40.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?

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