In the figure, a 100 mA current flows through a copper wire 0.10 mm in diameter, a 1.0 cm diameter glass tube containing a salt solution, and a vacuum tube where the current is carried by an electron beam 1.0 mm in diameter. The density of conduction electrons in copper is 1.1×10^29 m^-3. The current in the solution is carried equally by positive and negative ions with charges +/- 2e, the density of each ion species is 6.4×10^23 m^-3 . The electron density in the beam is 2.1×10^16 m^-3.
a) Find the drift speed in the salt solution. Express your answer using two significant figures in mm/s.
b) Find the drift speed in the electron beam. Express your answer using two significant figures in mm/s.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
APPROVED BY CLIENTS
"assignmentexpert.com" is professional group of people in Math subjects! They did assignments in very high level of mathematical modelling in the best quality. Thanks a lot
Comments
Leave a comment