Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 453 · 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 violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
3. 3.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-red (b) green-brown-black (c) green-brown-brown (d) brown-green-brown
6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-brown (b) blue-violet-red (c) violet-blue-brown (d) blue-violet-black
7. 7.🌈 In the resistor colour code, which number does violet stand for?
8. 8.🌈 In the resistor colour code, which number does green stand for?
9. 9.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
13. 13.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
14. 14.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
16. 16.🌈 In the resistor colour code, which number does red stand for?
17. 17.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
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 orange, yellow, brown. What is its value (in ohms)?
20. 20.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) yellow-orange-brown (b) orange-black-brown (c) orange-black-red (d) orange-black-black
28. 28.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 In the resistor colour code, which number does grey stand for?
30. 30.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-orange (c) violet-red-red (d) violet-red-brown
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-black (b) violet-red-brown (c) red-violet-red (d) red-violet-brown
33. 33.🌈 In the resistor colour code, which number does orange stand for?
34. 34.🌈 In the resistor colour code, which number does yellow stand for?
35. 35.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =

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