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Resistors Colour Codes


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  GCSE    Resistors  0 of 27    Question 1372    BS1852 Resistors Score 0/0 Not attempted Last Answer Deadline not set1 of 27    Question 1371    BS1852 Resistors Score 0/0 Not attempted Last Answer Deadline not set2 of 27    Question 1373    BS1852 Resistors Score 0/0 Not attempted Last Answer Deadline not set3 of 27    Question 1368    Colour Codes Score 0/0 Not attempted Last Answer Deadline not set4 of 27    Question 1367    Colour Codes Score 0/0 Not attempted Last Answer Deadline not set5 of 27    Question 1366    Colour Codes Score 0/0 Not attempted Last Answer Deadline not set6 of 27    Question 1500    Components Score 0/0 Not attempted Last Answer Deadline not set7 of 27    Question 275    Components Score 0/0 Not attempted Last Answer Deadline not set8 of 27    Question 269    Components Score 0/0 Not attempted Last Answer Deadline not set9 of 27    Question 244    Components Score 0/0 Not attempted Last Answer Deadline not set10 of 27    Question 243    Components Score 0/0 Not attempted Last Answer Deadline not set11 of 27    Question 242    Components Score 0/0 Not attempted Last Answer Deadline not set12 of 27    Question 1445    Components Score 0/0 Not attempted Last Answer Deadline not set13 of 27    Question 1376    E24 Score 0/0 Not attempted Last Answer Deadline not set14 of 27    Question 1375    E24 Score 0/0 Not attempted Last Answer Deadline not set15 of 27    Question 1425    Identify the Component Score 0/0 Not attempted Last Answer Deadline not set16 of 27    Question 1424    Identify the Component Score 0/0 Not attempted Last Answer Deadline not set17 of 27    Question 1426    Identify the Component Score 0/0 Not attempted Last Answer Deadline not set18 of 27    Question 438    Ohm's Law and Current Calculations Score 0/0 Not attempted Last Answer Deadline not set19 of 27    Question 160    Ohms Law Score 0/0 Not attempted Last Answer Deadline not set20 of 27    Question 162    Ohms Law Score 0/0 Not attempted Last Answer Deadline not set21 of 27    Question 561    Resistors Score 0/0 Not attempted Last Answer Deadline not set22 of 27    Question 2    Resistors in Parallel Score 0/0 Not attempted Last Answer Deadline not set23 of 27    Question 178    Resistors in Series Score 0/0 Not attempted Last Answer Deadline not set24 of 27    Question 526    Thermistors Score 0/0 Not attempted Last Answer Deadline not set25 of 27    Question 525    Thermistors Score 0/0 Not attempted Last Answer Deadline not set26 of 27    Question 524    Thermistors Score 0/0 Not attempted Last Answer Deadline not set27 of 27    Question 523    Thermistors Score 0/0 Not attempted Last Answer Deadline not set  Questions 0 to 27   -->  View All  

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         0                   1                   2                   3                   4                   5                   6                   7                   8                   9         
Black Brown Red Orange Yellow Green Blue Violet Gray White

Three Stripe Resistors

Three Stripe Resistors

  • The resistor value is coded as coloured stripes.
  • The first stripe represents a number. (Yellow = 4)
  • The second stripe represents a number. (Violet = 7)
  • The last stripe represents the number of zeros. (Orange = 000)
  • The optional tolerance stripe represents the accuracy. (Red = 2%)
  • 47 000 Ohms or 47 kΩ or 47K.

Four Stripe Resistors - Not Common

Resistor Four Stripe these are not common

  • The resistor value is coded as coloured stripes.
  • The first stripe represents a number. (Yellow = 4)
  • The second stripe represents a number. (Violet = 7)
  • The third stripe represents a number. (Black = 0)
  • The last stripe represents the number of zeros. (Red = 00)
  • The optional tolerance stripe represents the accuracy. (Red = 2%)
  • 47 000 Ohms or 47 kΩ or 47K.

Tolerances

  Colour Tolerance Letter Code
Brown   1% F
Red   2% G
Gold   5% J
Silver   10% K
Unmarked   20% M

Resistor Comedy

xkcd cartoon - 24 Ohm Snake    xkcd.com/1604/

xkcd cartoon - Resistor Color Codes     xkcd.com/227/

 

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