Can anyone explain me the phenomena of IR drop with example
Plz take a resistive network circuit and explain me
1. with one voltage source
2.with another voltage source
By seeing the circuit how can we say that this particular resistance is having more ir drop?

 

You might get the information you need from the first chapter in the Ebook on this site, especially in this section - http://www.allaboutcircuits.com/vol_1/chpt_5/2.html.

I am guessing that the "IR drop" you ask about is the voltage across circuit resistances that is calculated by E = IR, where I is the total current in the circuit.