本题目来源于试卷: Particulate Nature of Matter B.2 Greenhouse Effect，类别为 IB物理学
[单选题]
On a certain day, the soldm. ofuz6.,plar intensity on the Earth's surface is 300bk i39*fy8jlv $Wm^{−2}$. Photovoltaic cells which have an efficiency of 20% are used to convert solar energy to electrical energy. What should be the minimum area of the photovoltaic cells to produce an output of 6.0 kW assuming that the incident light is normal to the surface of the panel?
A. 20$m^2$
B. 40$m^2$
C. 100$m^2$
D. 3000$m^2$
参考答案: C
本题详细解析:
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