How many square meters of photovoltaic cells would be required to run a 11-W compact disc player? The efficiency of photovoltaic cells is 15% for converting 1000 W/m ² of solar energy to electricity.

Question

Quizplus · Accepted Answer

Power output of photovoltaic cells = (Efficiency) x (Solar energy per square meter)
= 0.15 x 1000 W/m2
= 150 W/m2

To run an 11-W device, the required area of photovoltaic cells can be calculated as:

Area = (Power required) / (Power output per square meter)
= 11 W / 150 W/m2
= 0.0733 m2

Therefore, the required area of photovoltaic cells is 0.073 m2, which is closest to option B (0.073 m2).

How Many Square Meters of Photovoltaic Cells Would Be Required