Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 877 · 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 orange, black, red. What is its value in kilo-ohms (kΩ)? =
2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-black (b) blue-orange-black (c) green-orange-brown (d) orange-green-black
3. 3.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
4. 4.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
5. 5.🌈 In the resistor colour code, which number does black stand for?
6. 6.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
8. 8.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
10. 10.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
11. 11.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
12. 12.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
13. 13.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
14. 14.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
15. 15.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) red-yellow-brown (b) yellow-red-black (c) yellow-red-brown (d) yellow-red-red
17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) brown-violet-red (b) violet-brown-brown (c) violet-brown-orange (d) violet-brown-red
18. 18.🌈 In the resistor colour code, which number does white stand for?
19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-brown (c) red-grey-orange (d) red-grey-red
20. 20.🌈 In the resistor colour code, which number does yellow stand for?
21. 21.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
22. 22.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
23. 23.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) orange-brown-black (b) red-brown-brown (c) red-brown-black (d) brown-red-black
25. 25.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
26. 26.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) white-yellow-black (b) grey-yellow-brown (c) yellow-grey-black (d) grey-yellow-black
28. 28.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
30. 30.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
31. 31.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
32. 32.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) red-grey-black (b) white-red-black (c) grey-red-brown (d) grey-red-black
36. 36.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
37. 37.🌈 In the resistor colour code, which number does red stand for?
38. 38.🌈 In the resistor colour code, which number does brown stand for?
39. 39.🌈 In the resistor colour code, which number does blue stand for?
40. 40.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =

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