Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 187 · 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.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
2. 2.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
3. 3.🌈 In the resistor colour code, which number does white stand for?
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-brown (b) white-violet-black (c) grey-violet-black (d) violet-grey-black
5. 5.🌈 In the resistor colour code, which number does orange stand for?
6. 6.🌈 In the resistor colour code, which number does blue stand for?
7. 7.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
11. 11.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) white-brown-brown (b) brown-white-brown (c) brown-white-black (d) brown-white-red
13. 13.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
17. 17.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
18. 18.🌈 In the resistor colour code, which number does green stand for?
19. 19.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
20. 20.🌈 In the resistor colour code, which number does yellow stand for?
21. 21.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-brown (b) brown-black-black (c) red-brown-black (d) red-black-black
24. 24.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) grey-orange-black (b) orange-grey-brown (c) orange-grey-black (d) yellow-grey-black
28. 28.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) grey-red-orange (b) red-grey-yellow (c) red-grey-red (d) red-grey-orange
30. 30.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) white-red-black (b) red-white-brown (c) white-red-red (d) white-red-brown
32. 32.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
34. 34.🌈 In the resistor colour code, which number does black stand for?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5700 Ω resistor? (a) green-violet-brown (b) green-violet-orange (c) violet-green-red (d) green-violet-red
36. 36.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-red (d) red-orange-yellow

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