6) A current is established in a gas discharge tube when a sufficiently high potential difference is applied across the two electrodes in the tube. The gas ionizes and electrons move toward the positive terminal and singly ionizes positive ions toward the negative terminal. a) What is the current in a hydrogen discharge tube in which 3.1 x 1018 electrons and 1.1 x 1018 protons move past a cross-sectional area of the tube each second? a) Is the direction of the current density / toward or away from the negative terminal