In a metre bridge experiment (see figure), the positions of the cell, E, and galvanometer, G, are interchanged. We shall observe in the galvanometer: (a) Only the left-sided deflection (b) There will be no deflection irrespective of the position of the jockey (c) Only the right-sided deflection (d) Both right-sided and left-sided deflection and at balance point, no deflection

Answer: (d). Interchanging cell and galvanometer does not change the balance condition (R₁)/(R₂) = (l₁)/(l₂) (reciprocity of the bridge). On one side of the balance point the galvanometer deflects one way, on the other side the opposite way. At the balance point there is no deflection. So the answer is (d).

In a metre bridge experiment (see figure), the positions of the cell… | NEET 2026

Q14NEET 2026Medium

Wheatstone Bridge & Metre Bridge

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

Show answer and solution

Answer: (d)

Interchanging cell and galvanometer does not change the balance condition $\dfrac{R_1}{R_2} = \dfrac{l_1}{l_2}$ (reciprocity of the bridge).
On one side of the balance point the galvanometer deflects one way, on the other side the opposite way.
At the balance point there is no deflection.
So the answer is (d).

Report a mistake

Wheatstone Bridge & Metre Bridge question from NEET 2026

More questions on Wheatstone Bridge & Metre Bridge