An oscillating circuit consisting of an inductance $L = 0.1$ H and a capacitor $C = 100 \cdot 10^{-6}$ F includes an "electronic switch" consisting of two identical diodes (see figure).

The IV-curve of the diodes is shown in the figure below.

The threshold voltage at which the diode opens is $U_t = 0.7$ V. Before the key K closes, the voltage on the capacitor is $U_0 = 4.5$ V.

How long after closing of switch $K$ the oscillations in the circuit will stop and the stationary mode will be established?

What is the steady-state voltage of the capacitor?

Plot the voltage on the capacitor against time.