What happens if the galvanometer and cell are interchanged at the balance point of the bridge? Would the galvanometer show any current? Please explain thoroughly.

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Solution

No change.

Anyway, if you consider the null point to be N and the initial zero load point to be A. Your galvanometer is connected between A and N. And the battery (whose voltage is being measured) is also connected between A and N. So interchanging does not do any thing

If the galvanometer and cell are interchanged, the position of the balance point remains unchanged. Hence, the galvanometer will show no current.

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