A current of 1600 A exists in a rectangular (0.4-by-16cm) bus bar. The current is due to free electrons moving through the wire at an average velocity of v meters/second. If the concentration of free electrons is 10^29 electrons per cubic meter and if they are uniformly dispersed throughout the wire, then what is the average velocity of an electron?
Using only the concepts that v=dw/dq and i=dq/dt how would i go about solving this problem?