For the simple equivalent circuit of 0017 m2 pv cell shown

Question

For the simple equivalent circuit of 0.017 m² PV cell shown below, the reverse saturatoin current is I0= 4 * 10-¹¹ A and at an insolation of 1-sun the short circuit current is I_sc = 6.4 A. At 25 degrees C, find the following:

a. The open circuit voltage

b. The load current and the output power when the output voltage is V = 0.55 V

c. The efficiency of the cell at V=0.55 V