Solving a problem in physics section 69 point 30 electr

Solving a problem in physics section 69 point 30 electr

30. Two flat air capacitors of the same capacity are connected in series and connected to an emf source. How and how many times will the potential difference change on the plates of the first capacitor if, without turning off the emf source, the space between the plates of the second capacitor is filled with ebonite (ε = 3)?

Additional information:

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