A plastic tube $25.0m$ long and $4.00\ cm$ in diameter is dipped into a silver solution, depositing a layer of silver $0.100\ mm$ thick uniformly over the outer surface of the tube. If the coated tube is connected to a $12.0V$ battery, then what will be the current? [Specific resistance of silver$=1.47 \times 10^{-8} \Omega \mathrm{m}$]