Question

A Wheatstone bridge consisting of four arms of resistances $P,Q,R,S$ is most sensitive when

• A. all the resistances are equal
• B. all the resistances are unequal
• C. the resistances $P$ and $Q$ are equal but $R>>P$ and $S>>Q$
• D. the resistances $P$ and $Q$ are equal but $R<<P$ and $S<<Q$

Answer 1

Answer: (A)

A Wheatstone bridge consisting of four arms of resistance $P,Q,R,S$ is most sensitive when all the resistances are equal.