Consider a circuit consisting of a capacitor ( 20 μ F ), resistor ( 100 Ω ) and two identical diodes as shown in figure. The resistance of diode…

Consider a circuit consisting of a capacitor ( $\displaystyle 20 \mu \mathrm{~F}$ ), resistor ( $\displaystyle 100 \Omega$ ) and two identical diodes as shown in figure. The resistance of diode under forward biasing condition is $\displaystyle 10 \Omega$. The time constant of the circuit is $\displaystyle \alpha \times 10^{-3} \mathrm{~s}$. The value of $\displaystyle \alpha$ is $\displaystyle \_\_\_\_$