Question

In a balanced Wheatstone bridge shown, if the positions of the battery E and the galvanometer G are interchanged, then G will show zero deflection

(a) only if R₁/R₃ = R₂/R₄

(b) only if R₁ = R₃ and R₂ = R₄.

(c) only if all the resistances are equal. 

(d) in all cases

Answer 1

Correct option: (d) in all cases

Explanation: 

In a Wheatstone bridge, the deflection in the galvanometer does not change whenever the battery and galvanometer are interchanged.