Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 138 · 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 4500 Ω resistor? (a) green-yellow-red (b) yellow-green-red (c) yellow-green-orange (d) yellow-green-brown
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
3. 3.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
4. 4.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
5. 5.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
7. 7.🌈 In the resistor colour code, which number does red stand for?
8. 8.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
9. 9.🌈 In the resistor colour code, which number does yellow stand for?
10. 10.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
16. 16.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-orange (b) blue-red-red (c) blue-red-brown (d) red-blue-red
22. 22.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
24. 24.🌈 In the resistor colour code, which number does white stand for?
25. 25.🌈 In the resistor colour code, which number does brown stand for?
26. 26.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
27. 27.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) orange-violet-brown (b) violet-orange-red (c) orange-violet-red (d) orange-violet-orange
29. 29.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-orange (b) brown-violet-brown (c) brown-violet-red (d) violet-brown-red
31. 31.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
32. 32.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) orange-violet-orange (b) violet-orange-red (c) violet-orange-yellow (d) violet-orange-orange
35. 35.🌈 In the resistor colour code, which number does black stand for?
36. 36.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
37. 37.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60000 Ω resistor? (a) violet-blue-orange (b) blue-black-red (c) blue-black-orange (d) blue-black-yellow
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) grey-blue-orange (b) grey-blue-red (c) grey-blue-brown (d) blue-grey-red
40. 40.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =

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