electricity numericals!! help needed!! When a sufficiently high voltage is applied between two electrodes in a gas, the gas ionises. Electrons move towards the positive electrodes,and positive ions move towards the negative electrode. a) what is the current in a hydrogen discharge if, in each second, 4.4 x 10^15 electrons and 1.5x 10^15 protons move in opposite directions past a cross-section of the tube? b)what is the direction of the current?