Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 677 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) green-yellow-red (b) yellow-green-brown (c) green-yellow-brown (d) green-yellow-black
2. 2.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
4. 4.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
5. 5.🌈 In the resistor colour code, which number does yellow stand for?
6. 6.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
7. 7.🌈 In the resistor colour code, which number does brown stand for?
8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-brown (b) red-yellow-red (c) yellow-red-red (d) yellow-red-orange
9. 9.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
10. 10.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
11. 11.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 In the resistor colour code, which number does orange stand for?
13. 13.🌈 In the resistor colour code, which number does blue stand for?
14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-orange (b) red-green-brown (c) red-green-red (d) green-red-red
15. 15.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
19. 19.🌈 In the resistor colour code, which number does red stand for?
20. 20.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
21. 21.🌈 In the resistor colour code, which number does black stand for?
22. 22.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-yellow (c) red-orange-orange (d) red-orange-red
24. 24.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
26. 26.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) white-red-brown (c) red-white-brown (d) red-white-black
30. 30.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) orange-black-black (c) red-black-black (d) red-black-brown
34. 34.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
35. 35.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-red (c) yellow-grey-orange (d) yellow-grey-red
37. 37.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
38. 38.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
40. 40.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?

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