The metre bridge is balanced when P/Q = l₁/l₂. If positions of galvanometer and cell are interchanged, does bridge work and what is balance condition? [Diagram: Image]
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The metre bridge is balanced when P/Q = l₁/l₂. If positions of galvanometer and cell are interchanged, does bridge work and what is balance condition? [Diagram: Image]

G1 Physics · Accepted Answer

Step 1: In a Wheatstone network, balance depends solely on ratios of resistances in opposite arms. Step 2: Swapping ideal battery and galvanometer does not alter the resistance ratios for null. Step 3: Still P/Q = l₁/l₂.