A Wheatstone bridge is initially at room temperature and all arms… | JEE Main 2026 Physics PYQ

MCQEasyJEE Main 2026 · 28 January, Shift 2Wheatstone Bridge & Meter Bridge

A Wheatstone bridge is initially at room temperature and all arms of the bridge have same value of resistances $\left(R_1=R_2=R_3=R_4\right).$ When $R_3$ resistance is heated, its resistance value increases by $10\%$ . The potential difference $(V_a-V_b)$ after $R_3$ is heated is ___ V.__

Wheatstone bridge circuit with resistors R1 and R2 on left branch, R3 and R4 on right branch, midpoint potentials Va and Vb marked, and a 40 V source connected across top and bottom nodes.

A
$0$
B
$0.95$
C
$2$
D
$1.05$

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