Salt water contains n sodium ions (Na ) per cubic meter and n chloride ions (C1) per cubic meter. A of the pipe is A: battery is connected to metal rods that dip into a narrow pipe full of salt water. The cross-sectional area Battery Ammeter Pipe full of salt water Cross-sectional area A Q8 What is the direction of conventional current flow in the salt water? (a) To the right. (b) To the left. (c) There is no conventional current because the motions of the positive and negative ions