Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 807 · 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.🌈 In the resistor colour code, which number does grey stand for?
2. 2.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
3. 3.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 In the resistor colour code, which number does violet stand for?
5. 5.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
7. 7.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
8. 8.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
9. 9.🌈 In the resistor colour code, which number does blue stand for?
10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) blue-brown-brown (b) brown-blue-red (c) brown-blue-black (d) brown-blue-brown
11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-brown (b) white-red-brown (c) red-white-red (d) red-white-black
12. 12.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
13. 13.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
14. 14.🌈 In the resistor colour code, which number does red stand for?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) violet-white-brown (b) white-violet-brown (c) violet-white-black (d) violet-white-red
16. 16.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) red-blue-red (b) blue-red-brown (c) blue-red-orange (d) blue-red-red
21. 21.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-red (b) yellow-red-orange (c) yellow-red-yellow (d) red-yellow-orange
24. 24.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
25. 25.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
27. 27.🌈 In the resistor colour code, which number does orange stand for?
28. 28.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
29. 29.🌈 In the resistor colour code, which number does yellow stand for?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-orange (b) grey-white-red (c) grey-grey-red (d) grey-grey-brown
31. 31.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
34. 34.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4300 Ω resistor? (a) yellow-orange-orange (b) yellow-orange-brown (c) yellow-orange-red (d) orange-yellow-red
36. 36.🌈 In the resistor colour code, which number does brown stand for?
37. 37.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
40. 40.🌈 In the resistor colour code, which number does black stand for?

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