Find the total current in the circuits shown in Fig. , , and . Each diode used is ideal

The current .i. in the circuit as shown in fig. is

Find the current in each resistor in the circuit as shown in fig.

Find the current in each resistor in the circuit as shown in fig.

Find the maximum voltage across AB in the circuit shown in Fig. Assume that diode is ideal. .

Find the charge of each capacitor in the circuit shown in Fig.

Determine the current through the resistancees of the circuit shown in Fig.. The each p-n junction used is ideal one.