Hey friends i am unable to understand the Resistor Colour Codes and how the resistance is calculated when four coloured resistors are placed one after another. also explain the digits (what the single digits and numbers in order of ten) and meaning of tolerance.

PS: please tell a trick to remember the order if possible.

Rates assured...

BB ROY of GREAT BRITAIN had a VERY GOOD WIFE

well i 'v got this ............How to calculate



The colored bands on a resistor



represent a code for determining resistance.



The 1rst two colors give the 1rst



two digits in the resistance value. The third



color represents the power of ten for the



multiplier of the resistance value. The last



color is the tolerance of the resistance



value. As an example, the four colors on



the circled resistors are red black



orange and gold



and so the resistance value is 20 * 10³ =



20 k with a tolerance value of 5% = 1 k.



 

@sahil madaan12         thanx fr trick

yes user naughtygal is right

the four colors on

the circled resistors are red black

orange and gold

means

20*10^3 +- 5%

the last colour i.e. GOLD-5%

SILVER 10%

NO COLOUR-20%

This shows the percentage of tolerence