a copper bar 0.5 by 1.0cm in cross-sectional area and 3.0m long has a steady potential of 0.1V between its ends. The atomic weight of copper is 63.5, and its density is 8.96g/cm^3. The resistivity of coppper is 1.7 x 10^-8 omega M.

A) find the current flowing through the bar, the current density, and the electric field strength in the bar.

B) how many electrons per second flow past any point of the bar?

C) find the average drift velocity of the electrons and how long it takes, on average, for an electron to flow from one end to the other end of the bar. You will need to estimate n

Question

a copper bar 0.5 by 1.0cm in cross-sectional area and 3.0m long has a steady potential of 0.1V between its ends.  The atomic weight of copper is 63.5, and its density is 8.96g/cm^3.  The resistivity of coppper is 1.7 x 10^-8 omega M. 

A) find the current flowing through the bar, the current density, and the electric field strength in the bar.

B) how many electrons per second flow past any point of the bar?

C) find the average drift velocity of the electrons and how long it takes, on average, for an electron to flow from one end to the other end of the bar.  You will need to estimate n

anonymous · Answer

okay so for A) i have the current = 5.88 x 10^6 A which seems very large...  and i have the current density as 8.49 x 10^28 atoms/m^3 and the electric field as .033.  are these correct? and could someone point me in the right direction for B and C?