Question

What is the nessesity of balanced condition in whatstone's bridge?

Answer 1

Wheat stone bridge is an electrical circuit . In wheat-stone bridge four resistance R1, R2, R3 and R4 are connected end to end with each other to form a closed loop. A sensitive galvanometer "G" is connected between their junctions as shown . The circuit is provided with two keys ‘K1’ and ‘K2’.
Generally wheat-stone