At a distance of 1 cm from each other are two plates of 400 cm ^ 2 each. Hydrogen between the plates is ionized by X-rays. When a voltage of 100 V between the plates is far from saturation current of 2 mA. Determine the concentration of ions of the same sign honey plates. The charge of each ion is considered equal to the elementary charge.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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