The reverse saturation current Io of a silicon cell at 40°C is 1.8 × 10-7 A. The short circuit current when exposed to sunlight is 5 A. From this information, compute
a. Open circuit voltage.
b. Maximum power output of the cell.
c. The number of 4 × 4 cm cells needed to supply 100 W at 12 V. How must the cells be arranged?