Solar cells generate a potential difference when exposed to sunlight. In an expe

Question

Solar cells generate a potential difference when exposed to sunlight. In an experiment, you wish to charge a rechargeable battery by connecting it in series to an array of solar cells. You perform the experiment outdoors, in direct sunlight, when the intensity of solar radiation is

1000 W/m2.

However, your solar cells only have an efficiency of 11% (that is, only 11% of the sunlight power transmitted to the solar cells is delivered to the rechargeable battery). While the circuit is connected, you measure at one instant the potential difference across the battery to be 4.80 V and the current in the circuit to be 0.27 A.What is the area of the array of solar cells?

m2

Explanation / Answer

Check the short circuit current specification. This depends on efficiency, area of the cells, and how much sunlight. The specification at 1000W/m^2 is for full sun, with the panel squarely facing the sun. The sun should be more than 45

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