Q.
In the circuit shown $P \neq R,$ 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) $I_{Q} = I_{R}$
Explanation
(a) Reading of galvanometer remains same whether switch $S$ is open or closed, hence no current will flow through the switch $i.e.\ R$ and $G$ will be in series and same current will flow through them. $I_{R} = I_{G}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.