Choose the description from A through D which best describes the illustrated wave packet.
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- In the Drude model, a) derive a relation for the velocity of electrons if there is no any external field on the metal. b) derive a relation for the velocity of electrons when you apply an electric field on this metal. What do you expect the electrons' velocity to be at times longer than the scattering time T ? c) write down a relation for the current density J for the previous parts.For the circuit shown a) Determine the mode of operation that the transistor is in. Assume that V1>0. Show work to justify your reasoning. b) Sketch la vs V1 (this plot may be qualitative) laWhat am i doing?