Question 2
3 pts
In a semi-conductor, one can control the density of charge carriers, n (number of mobile charges per volume), by varying the temperature. Let the charge of each charge carrier be e and the drift speed be $v_d$. The cross sectional area of your semi-conductor resistor is A. Assume the drift speed is the same in all the experiments.
Using an ideal EMF of constant voltage, you measure the current, I, at different charge carrier density, n, and make a graph with I on the vertical and n on the horizontal axis. What does the slope of this graph correspond to?
$v_d$
$1/v_d$
None of the other answers are correct.
$eAv_d$
$enAv_d$
$1/eAv_d$