A net of 9 x 1020 concution electron passes via a 1.4mm diameter silver (ρ =1.61 x 10-8Ωm) wire in 1.2 minutes. The length of the wire is 8m. Find out the following:
i) The current I in the wire.
ii) The current density J in the wire.
iii) The potential difference ΔV across the wires.
iv) The electric field strength E in the wire.