The Wheatstone bridge shown in the figure is
balanced. If the positions of the cell C and the
galvanometer G are now interchanged, G will
show zero deflection – (diagram)
(a) in all cases
(b) only if all the resistances are equal
(c) only if R₁ = R₃ and R₂ = R₄
(d) only if R₁ /R₃/R₂/R₄
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Answer :- (b) only if all the resistances are equal.
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Explanation:
The Wheatstone bridge shown in the figure is
balanced. If the positions of the cell C and the
galvanometer G are now interchanged, G will
show zero deflection – (diagram)
(a) in all cases
(b) only if all the resistances are equal
(c) only if R₁ = R₃ and R₂ = R₄
(d) only if R₁ /R₃/R₂/R₄
Oprtion B
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