# I want the chart of colour code to find the Resistance value

1
by Karthiksagar951

2015-01-12T00:35:18+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
On a resistance usually, we have  4 circular  color bands on the cylindrical  surface of the body of resistance.  These colors represent  a digit.  From left side, the first three colors bands represent  the digits as follows.  The fourth color band to the extreme right represents the  exponent for 10, which  multiplies the the 3 digit number , to give final resistance value.

There is also a 5th digit  that usually gives the tolerance for the resistance.  That is the (maximum) error percentage in the value of resistance.

=========================================================
color        value of digit  for      4th band                  tolerance % given by
the first 3 digits       multiplier                   the 5th color band
==========================================================
Black          0                       10^0 = 1 ohm                    0 %
Brown          1                      10^1  ohm                         1 %
Red              2                      10^2 ohms                      2 %

Orange        3                      10^3 = 1 k ohm
Yellow          4                      10^4 = 10 kOhms
Green          5                      10^5 = 100 k ohms            0.5 %

Blue             6                    10^6 = 1 mega ohm            0.25 %
Violet        7                      10^7  = 10 mega ohm           0.10 %
Grey          8                      10^8                                  0.05 %
White      9                       10^9
==============================
Gold        -                        0.1 = 10^-1  ohm                   5 %
Silver        --                       0.01= 10^-2  ohms                10%
================================

Let us say the left most color is Red, then yellow, then violet.  then orange.  Then silver bands are there on the resistance, in the lab.

value of resistance is : 247 * 10^3 ohms with a tolerance of +- 10%
ie., the resistance is with in the range of :    247k ohms - 24.7 kohms  to 247 kohms + 24.7 kohms.