29. The air between the plates of a plane capacitor is ionized by X-rays. The strength of the current flowing between the plates 10 microamps. The area of each capacitor plate is 200 cm2, and the distance between them of 1 cm, the potential difference of 100 V. The mobility of positive ions + b = 1,4 cm2 / (V • s) and negative b- = 1,9 cm2 / (V • s); the charge of each ion is equal to the elementary charge. Determine the concentration of ion pairs between the plates, if the current is far from saturation.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)