Electronics Worksheet: Resistor Colour Code
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.
NameDateTime takenScore ___ / 40
- 1.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
- 2.🌈 In the resistor colour code, which number does black stand for?
- 3.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
- 4.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
- 5.🌈 In the resistor colour code, which number does yellow stand for?
- 6.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
- 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) orange-brown-orange (b) brown-orange-red (c) brown-orange-yellow (d) brown-orange-orange
- 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
- 9.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
- 10.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
- 11.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
- 12.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
- 13.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
- 14.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
- 15.🌈 In the resistor colour code, which number does violet stand for?
- 16.🌈 In the resistor colour code, which number does white stand for?
- 17.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
- 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) yellow-blue-black (b) orange-blue-brown (c) orange-blue-black (d) blue-orange-black
- 19.🌈 In the resistor colour code, which number does red stand for?
- 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-yellow (b) red-orange-orange (c) orange-red-red (d) orange-red-orange
- 21.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
- 22.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
- 23.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
- 24.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
- 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) orange-red-black (b) red-red-brown (c) red-red-black (d) red-orange-black
- 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) grey-red-brown (b) red-grey-black (c) grey-red-black (d) white-red-black
- 27.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
- 28.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
- 29.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
- 30.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
- 31.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
- 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) brown-red-brown (b) red-brown-black (c) red-brown-red (d) red-brown-brown
- 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-orange (b) red-white-orange (c) white-red-yellow (d) white-red-red
- 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-brown (b) grey-black-black (c) white-grey-black (d) white-black-black
- 35.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
- 36.🌈 In the resistor colour code, which number does blue stand for?
- 37.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
- 38.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
- 39.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
- 40.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
Answer key
- 46
- 0
- 3
- 8
- 4
- 62000
- brown-orange-orange
- 5 %
- 64000
- 30000
- 67
- 3700
- 39
- 360
- 7
- 9
- 4300
- orange-blue-black
- 2
- orange-red-orange
- 760
- 330
- 28
- 240
- red-red-black
- grey-red-black
- 590
- the one nearest an end
- 5.9
- 49
- 8.1
- red-brown-brown
- white-red-orange
- grey-black-black
- 68000
- 6
- 29
- 6.3
- 6.9
- 67000
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