To learn to apply and combine the concepts of current, current density, and microscopic Ohm's law.
An aluminium "12 gauge" wire has a diameter d of 0.205 centimetres. The resistivity ρ of aluminium is The electric field in the wire changes with time as Newtons per coulomb, where time is measured in seconds.
Find the current 'i' through the conductor at time 5.0 seconds.
