Question

In the circuit `P != R, ` the reading of the galvanometer is same with switch S open or closed. Then

A. `I_(R)=I_(G)`
B. `I_(P)=I_(G)`
C. `I_(Q)=I_(G)`
D. `I_(Q)=I_(R)`

Answer 1

Correct Answer - A
As there is no change in the reading of galvanometer with switch S open or closed. It implies that bridge is balanced current through S is zero and `I_(R)=I_(G),I_(P)=I_(Q)`