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JEE Main Last 10 Years Question Papers with Solutions PDF 2024 to 2014

Resistor Colour Code - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

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  • 11 Questions around this concept.

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Colour coding of Resistance
  1. Colour coding of Resistance

The carbon resistance has normally four coloured rings bands A,B,C and D .


Colour bands A and B Indicates the decimal figure.

Colour band C Indicates the decimal multiplier.

Colour band D Indicates the tolerance in per cent about the indicated value. Tolerance represents the percentage accuracy of the indicated value.


  • To remember the sequence of colour code 

B B ROY Great Britain Very Good Wife

Tolerance of Gold is \pm 5 %

Tolerance of Silver is \pm 10%

Tolerance if no colour \pm 20%


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