Q3) Consider a bar of silicon in which an electron concentration profile described by: n(x)=no . e(-32)/Lp is established. Find the electron-current density at x=0 and x=Lp/2. let no=1015/cm³.and Lp = 4,µ. If the cross-sectional area of the bar is 100 µm². Find the current Ip.( /3)

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