How to Identify The Resistances and its Ohm's 

The most commonly used part in electronics is the resistance . It is used to control the flow of current in the circuit or to divide the voltage. Resistances are of many types but all those have a common purpose "resist flow of electricity" .

Bunch of resistances

Unit of Resistance :

Unit of Resistance is "Ohms" .  The resistance having more ohms means that it will ceate more opposing force against the electricity.

Due to the fact any opposing thing waste energy, Hence the resistances dissipate heat  and waste the energy.

 But still low loss resistances ie Carbon film resistances  are used. The image containing are the carbon film resistance.

Determination of the Value of Resistance :

Most of the people use Multimeter to determine the resistance of the resistor. But it is not the professional manner to do so , As it wastes time . I am telling you the way how to calculate the resistance manually. If you practice it three or 4 times then it will take less time than the Multimeter method .

step 1 : First Hold the Resistor in Right Position

RIGHT METHOD             WRONG METHOD

First of all you have to hold the resistor correctly , for this keep the ring which have a metallic color to the  right side . The metallic color may  be Golden ,Silver etc. 

In the image i have shown the two possible ways of holding a resistor. The part of image written "OK" is the right way.

step 2 : Read Bands according to the table and write the adjacent number

Now using this table you can calculate  any resistance value for a 4 Band  resistor .

NOTE :-  Here it is necessary to remember the colors in order so that the whole table can be recalled at anytime. Just remember the following phrase "BBROYGBVGW" remember this phrase you should remember a sentence "B.B. Roy of Great Britain Has a Very Good Wife"

I hopeyI hope that you have understood the basics of reading colour code . If still there is any problem please read Document attached here .... it is a Two Page Guide  for the color codes.

Click Here to download The Color Code QuickHelper (50 KB PDF)

Please comment ,as all your guidance , suggestions and doubts are important , respectable for me and heartily welcomed .

Author

Rahul Verma