Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 845 · 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 yellow, violet, orange. What is its value (in ohms)?
2. 2.🌈 In the resistor colour code, which number does brown stand for?
3. 3.🌈 In the resistor colour code, which number does grey stand for?
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) red-green-red (b) green-red-orange (c) green-red-brown (d) green-red-red
5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-red (b) yellow-orange-orange (c) orange-black-yellow (d) orange-black-orange
6. 6.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
7. 7.🌈 In the resistor colour code, which number does yellow stand for?
8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
9. 9.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
11. 11.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-red (b) red-violet-orange (c) violet-red-orange (d) violet-red-yellow
14. 14.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-black-black (b) green-black-brown (c) green-black-black (d) blue-green-black
17. 17.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-brown (b) orange-violet-black (c) violet-orange-black (d) yellow-violet-black
19. 19.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) yellow-violet-red (b) violet-yellow-orange (c) violet-yellow-red (d) violet-yellow-brown
21. 21.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
23. 23.🌈 In the resistor colour code, which number does white stand for?
24. 24.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
25. 25.🌈 In the resistor colour code, which number does violet stand for?
26. 26.🌈 In the resistor colour code, which number does green stand for?
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-red (b) brown-red-brown (c) brown-red-black (d) red-brown-brown
28. 28.🌈 In the resistor colour code, which number does blue stand for?
29. 29.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) red-white-black (c) white-red-brown (d) red-white-brown
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-black (b) grey-red-brown (c) red-grey-brown (d) grey-red-red
34. 34.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
36. 36.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-orange-brown (c) red-red-black (d) red-red-brown
38. 38.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) violet-yellow-brown (b) grey-yellow-black (c) yellow-violet-black (d) violet-yellow-black
40. 40.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?

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