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A linear $\text{2-port}$ network is shown in $\text{Fig.(a)}.$ An ideal $\text{DC}$ voltage source of $10 \; \text{V}$ is connected across Port $1.$ A variable resistance $R$ is connected across Port $2.$ As $R$ is varied, the measured voltage and current at Port $2$ is shown in $\text{Fig.(b)}$ as a $V_{2}$ versus $-I_{2}$ plot. Note that for $V_{2} = 5 V, I_{2} = 0 \; \text{mA},$ and for $V_{2} = 4 \; \text{V}, I_{2} = – 4 \; \text{mA}.$

When the variable resistance $R$ at Port $2$ is replaced by the load shown in $\text{Fig.(c)},$ the current $I_{2}$ is ___________ $\text{mA}$ (rounded off to one decimal place).

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