List of top Electrical and Electronic Measurements Questions asked in GATE Instrumentation Engineering

Four strain gauges $R_A, R_B, R_C, R_D$ (nominal $R$) are in a bridge. Under force: $R_A$ and $R_D$ increase by $\Delta R$, $R_B$ and $R_C$ decrease by $\Delta R$. A potentiometer of total resistance $R_v$ is connected as shown to rebalance the bridge. If $R=100~\Omega$ and $\Delta R=1~\Omega$, the minimum $R_v$ required to balance the bridge is _____ $\Omega$ (rounded off to two decimal places).