Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 989 · 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 grey, black, brown. What is its value (in ohms)?
2. 2.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
6. 6.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
7. 7.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
8. 8.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 In the resistor colour code, which number does red stand for?
10. 10.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) green-grey-yellow (b) grey-green-orange (c) green-grey-red (d) green-grey-orange
12. 12.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-red (b) blue-green-yellow (c) blue-green-orange (d) green-blue-orange
14. 14.🌈 In the resistor colour code, which number does brown stand for?
15. 15.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
16. 16.🌈 In the resistor colour code, which number does orange stand for?
17. 17.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
18. 18.🌈 In the resistor colour code, which number does violet stand for?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-red (b) green-brown-yellow (c) brown-green-orange (d) green-brown-orange
20. 20.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
22. 22.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) green-blue-red (b) blue-green-red (c) green-blue-orange (d) green-blue-brown
24. 24.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
28. 28.🌈 In the resistor colour code, which number does yellow stand for?
29. 29.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
30. 30.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) brown-violet-red (c) violet-brown-brown (d) violet-brown-orange
33. 33.🌈 In the resistor colour code, which number does black stand for?
34. 34.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-black (b) white-orange-brown (c) white-orange-red (d) orange-white-brown
37. 37.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
39. 39.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
40. 40.🌈 In the resistor colour code, which number does green stand for?

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