Question

Explain colour coding of carbon registor with suitable diagram.

Answer 1

carbon resistance has usually four rings or bands a , B , C , D of different colours . The colours of first two bands A and B indicate the first two significant figure of the value of resistance in ohm , while the colour of third band C indicates the decimal multiplier .The colour of fourth band D tells the tolerane of the resistance . If the colour of fourth band is silver or gold , then tolerance of the resistance is 10%and5%10%and5%
For Example : Let there be a resistor whose bands have the colours