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Unformatted text preview: the left. The current through the device, i D (t), is related to the voltage across its terminals, v AB (t), by the equation, i D (t) = I C (v AB + 4 v AB 3 ), where I C = 103 A. There is no charge or flux storage associated with this device. i D Nonlinear twoterminal device, D R i d A B a b + +v ab v AB A linear equivalent circuit for the device D valid for small signal operation about a bias point, v AB = V AB , is shown to the right. What is R for the bias point V AB = 2V? R = Problem 4 Simple electrostatics In a certain sample of material the electric field, E(x,y,z), varies only in the xdirection, i.e., E(x,y,z) = E(x), where E(x) is shown below. The dielectric constant, e , is uniform throughout the sample with a value of 1010 coul/Vcm. E(x) [V/cm] 2 10 32 1 1 2 3 x [µm] 210 On the axes provided below, sketch and dimension the net charge distribution in this sample. 3 2 1 1 2 3 x [µm] End of diagnosis; you may get up from the couch....
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This note was uploaded on 07/20/2009 for the course CSAIL 6.012 taught by Professor Prof.cliftonfonstadjr. during the Fall '03 term at MIT.
 Fall '03
 Prof.CliftonFonstadJr.

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