Question

a photocell has a short circuit current of 25 ma, an open circuit voltage of 0.6 v and a maximum power output of 12 mw. what is its fill factor?

Answer 1

The fill factor of the photocell is calculated to be 80%, which indicates the efficiency of the cell in converting sunlight into electrical power.

Step-by-step explanation:

The fill factor (FF) of a solar cell is a parameter which, in conjunction with the open circuit voltage (Voc) and the short circuit current (Isc), determines the maximum power output of the cell.

It can be calculated using the formula:

FF = (Maximum Power Output) / (Voc × Isc)

Given the values:

• Short circuit current (Isc) = 25 mA = 0.025 A
• Open circuit voltage (Voc) = 0.6 V
• Maximum power output = 12 mW = 0.012 W

The fill factor is calculated as:

FF = 0.012 W / (0.6 V × 0.025 A) = 0.8 or 80%

Thus, the solar cell's fill factor is 80%, indicating the efficiency of the cell with respect to converting sunlight into electricity.