C) An electric field is applied with E=+1000.volts/m_for t= 1.3171 x 10^-9 s. Show on the graph how the electron and hole states change. i) Write down the expression for

the e- current in the band in terms of the velocities in the states labeled A→J (you do not need to put in numbers). ii) Show the hole configuration after the application of the field. Evaluate the hole expression for the current (in Amps). (Note: L = Na =10•x x 10^-10 m) Note: The electron and hole pictures give the same results for current, momentum, energy–we use whichever is more convenient (but not both at the same time!