For the shown Network, find the collector current (Ic) of the npn transistor 4.7kQ 280 ΚΩ www 10V Beta = 90 -Ic = 92.9394 mA.a O -Ic= 1.1827 mA.b O -Ic=178.083 mA.CO -I = 2.9889 mA.d O

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Photoconductive Cell

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium sulfide (CdS) is used to make the most commercially available photoconductive particles which are sensitive to light in the visible spectrum. Other less commonly used substances respond to infrared light, but not to the visible spectrum. Such substances are lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), and so on.