Answer: A current is established in a gas discharge tube
Chapter , Problem 76(choose chapter or problem)
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; electrons move toward the positive terminal and singly charged positive ions toward the negative terminal. (a) What is the current in a hydrogen discharge tube in which 3.1 X 10 18 electrons and 1.1 X 10 18 protons move past a cross-sectional area of the tube each second? (b) Is the direction of the current density 7 toward or away from the negative terminal?
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