5 m a calculate the internal pinchoff voltage

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Unformatted text preview: e ratio of the two electric fields, as (either answer was accepted) Eext 135 = = 20.8 Eint 6.5 −10 ε = ε r ε 0 = 1.84 × 10 εr = (b) To find the polarizability (not the polarization), we need to find the atomic density. The simple cubic lattice has 1 atom per unit cell, so that N= 1 1 = = 3.7 × 10 28 / m 3 3 3 a (0.3nm ) Then, we find the polarizability from 4. χe = εr − 1 = Nα 8.854 × 10 −12 ⋅ 19.8 →α = = 4.73 × 10 −39 F ⋅ m 2 28 ε0 3.7 × 10 Consider an n- channel silicon JFET with the following parameters: Na =...
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