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 Isc = 6.4 A. At 25 degrees C, find the following:
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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