Consider the circuit shown in Figure P2.64. The forward-bias cut-in voltage of the diode is \(1.5 \mathrm{~V}\) and the forward-bias resistance is \(r_{f}=10 \Omega\). Determine the value of \(R\) required to limit the current to \(I=12 \mathrm{~mA}\) when \(V_{I}=0.2 \mathrm{~V}\).

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Vcc = 10 V R R Vo Figure P2.64