ch26-p030 - 30. We use J = E = (n+ + n)evd, which combines...

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30. We use J = σ E = ( n + + n ) ev d , which combines Eq. 26-13 and Eq. 26-7. (a) The magnitude of the current density is J = E = (2.70 × 10 –14 / ·m) (120 V/m) = 3.24 × 10 –12 A/m 2 .
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