In a metre bridge experiment (see figure), th | vedclass

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(D) In a Wheatstone bridge (of which the metre bridge is a form), the galvanometer and the cell (battery) are conjugate branches.According to the reci

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Both right-sided and left-sided deflection and at balance point, no deflection

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(D) In a Wheatstone bridge (of which the metre bridge is a form), the galvanometer and the cell (battery) are conjugate branches.According to the reciprocity theorem, interchanging the positions of the battery and the galvanometer does not change the condition of the bridge balance.If it was balanced, it remains balanced; if it was unbalanced, the deflection might change in magnitude or direction, but it will still show a balance point.Therefore, both deflections can be observed depending on the jockey position, and null deflection will still occur at the balance point.Thus, option $D$ is correct.

In a metre bridge experiment (see figure), the positions of the cell, $E$, and galvanometer, $G$, are interchanged. We shall observe in the galvanometer:

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