Assume that each diode as shown in the figure has a forward bias resistance of 50 Ω and an infinite reverse bias resistance. The current through the resistance 150 Ω is

• 0.66 A

• 0.05 A

• Zero

• 0.04 A

Two cells A and B of emf 2V and 1.5 V respectively, are connected as shown in figure through an external resistance 10 Ω. The internal resistance of each cell is 5 Ω. The potential difference E_A and E_B across the terminals of the cells A and B respectively are

• E_A = 2.0 V, E_B = 1.5 V

• E_A = 2.125 V, E_B  = 1.375 V

• E_A = 1.875 V, E_B = 1.625 V

• E_A = 1.875 V, E_B = 1.375 V