Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 507 · 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 blue stand for?
2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
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 yellow, green, red. What is its value in kilo-ohms (kΩ)? =
5. 5.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
6. 6.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-orange (b) brown-yellow-red (c) yellow-brown-red (d) brown-yellow-brown
8. 8.🌈 In the resistor colour code, which number does yellow stand for?
9. 9.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
10. 10.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
11. 11.🌈 In the resistor colour code, which number does red stand for?
12. 12.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-black-black (b) red-brown-black (c) brown-black-brown (d) brown-black-black
14. 14.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) violet-green-black (b) green-violet-brown (c) green-violet-black (d) blue-violet-black
16. 16.🌈 A resistor has the colour bands green, green, brown. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
18. 18.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
19. 19.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
20. 20.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) yellow-violet-red (b) violet-yellow-brown (c) violet-yellow-red (d) violet-yellow-orange
22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) violet-grey-brown (b) grey-violet-brown (c) grey-violet-red (d) grey-violet-black
23. 23.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 In the resistor colour code, which number does brown stand for?
26. 26.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
27. 27.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
28. 28.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-brown (c) yellow-green-black (d) green-yellow-black
30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-brown (b) green-black-red (c) green-black-orange (d) blue-green-red
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) grey-yellow-brown (b) yellow-grey-brown (c) grey-yellow-black (d) grey-yellow-red
32. 32.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
33. 33.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) orange-brown-black (b) red-brown-black (c) red-brown-brown (d) brown-red-black
35. 35.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
36. 36.🌈 In the resistor colour code, which number does orange stand for?
37. 37.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
38. 38.🌈 In the resistor colour code, which number does black stand for?
39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-red (b) yellow-orange-red (c) orange-yellow-orange (d) orange-yellow-brown
40. 40.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids