Find the current and voltage of each diode in the circuit of if: (a) D1 is reversed, so that its anode is now at the right and its cathode at the left; (b) D2 is reversed, so its anode is now at the...

Find the current and voltage of each diode in the circuit of if: (a) D1 is reversed, so that its anode is now at the right and its cathode at the left; (b) D2 is reversed, so its anode is now at the left and its cathode at the right; (c) D3 is reversed, so its anode is now at the bottom and its cathode at the top; (d) all three diodes are reversed simultaneously. Use the hint of Problem 1.5.